Charlie and Mac try to prove that they are not racist after Charlie's crush overhears Charlie saying something offensive about African Americans. Meanwhile, Dee hires a black man from her acting class to boost business for Paddy's Pub -- and ends up turning the pub into a gay bar.

Charlie gets a paternity test to prove that he's not the father of his old flame's ill-behaved son. Meanwhile, Mac and Dennis feign being against abortion so they can pick up women.

When Mac decides to make Paddy's Pub a safe haven for underage drinkers, it becomes high school all over again as Dee, Dennis, and Charlie get asked to the prom.

Dennis and Mac help Charlie find someone to sleep with him after Charlie announces that he's dying of cancer.

Everyone gets trigger happy when, in the wake of a robbery, the guys buy a gun, and Dee unknowingly dates the prime suspect.

When an old man is found dead in Paddy's, Mac and Dennis vie for the affection of his attractive granddaughter, while Charlie discovers that Dennis and Dee's grandfather was a Nazi.

When news of a former gym teacher getting arrested for molesting his students hits, Charlie suddenly gets nervous, Dee and Dennis conclude that Charlie may have been one of the gym teacher's victims. Mac becomes jealous that he wasn't the one who got molested.

Dennis and Dee's father Frank abruptly appears, causing Dennis to accidentally run Charlie over with his car. After seeing Charlie get attention from strippers over being in a wheelchair, the gang decides to feign disabilities in order to garner sympathy from others.

An Israeli businessman claims ownership of the street that Paddy's Pub is on, prompting the gang to go to extremes to get the man to leave. Meanwhile, Frank fights with his ex-wife over the possessions she got in the divorce.

Dennis and Dee quit their jobs to pursue their dreams, but get hooked on crack cocaine so they can apply for welfare. Meanwhile, Frank hires two new workers under the "Work for Welfare" program and Charlie and Mac go on a spending spree.

A visit to Frank's ex-wife's house turns into a web of back-stabbing and deception after Mac has sex with Dennis's mother and Charlie hatches a plan to get close to The Waitress.

Frank trains Dee for a boxing match against the daughter of his old boxing foe. Meanwhile, Dennis and Mac train Charlie for an underground fighting ring.

Mac, Dennis and Dee are sentenced to teach inner-city children how to play basketball while Charlie is sentenced to attend AA meetings.

When the gang finds a water stain in the office that resembles the Virgin Mary, Frank begins charging patrons to see the miracle.

After realizing the money-making potential of political corruption, the gang decides to help Dennis run for the position of a local comptroller.

Charlie is outraged over Dennis smoking in the bar, and teams up with Dee to start an anti-smoking rally. Meanwhile, Mac, Dennis, and Frank turn Paddy's Pub into an "anything goes" bar.

Dennis and Dee discover the MySpace page of the man who turns out to be their real father. Meanwhile, Charlie and Mac visit Mac's convict father in jail.

Dennis joins up with an environmentalist group. Mac and Dee try to care for a baby boy they found in the Dumpster and Charlie and Frank become dumpster divers.

Frank's ex-wife Barbara dies, leaving behind a big inheritance that Frank and Dee will do anything to get. Meanwhile, Mac, Dennis, and Charlie use Reynolds house as a men's club to make new friends.

Paddy's Pub is held hostage by the McPoyles. Meanwhile, Frank crawls through the vents to find his will, which Charlie hid.

The gang gets involved in the seedy side of the world of fashion design after Dee gets jealous of her former high-school best friend, who is now a successful boutique owner.

The gang find themselves at odds with a more successful Korean pub owner who bears a striking resemblance to Kim Jong-Il. Charlie also becomes involved with the owner's daughter.

The gang tries to persuade a restaurant chain to buy their pub. Meanwhile, Dee quits her job at Paddy's (again) and pressures The Waitress to get her a job at a TGIFriday's-style restaurant.

The gang go to great lengths to be famous: Mac, Charlie, and Frank attempt to become news reporters; Dennis and Dee try becoming club-hoppers.

Dee begins dating an amateur rapper whom Dennis thinks is mentally retarded. Meanwhile, Frank, Charlie, and Mac start their own band but can't agree on what type of music they should play.

After reading about a serial killer terrorizing young women, the gang suspects that Mac may be the serial killer when they notice that he hasn't been to the bar much lately.

Dennis's life goes downhill when he finds out that a convicted sex offender whom he closely resembles has been released from prison due to overcrowding. Meanwhile, Mac and Charlie reunite with Mac's convict father.

The gang find themselves married to the mob when they sell a bag of cocaine that a group of mobsters hid in a pair of speakers. To pay off the debt, Frank whores out Dennis to older women, Charlie works at a stable, and Mac becomes a mafioso.

The gang must find a way to avoid getting "whacked" when their plans to pay off mob members for missing cocaine go awry.

Mac and Dee become vigilantes to solve the homeless problem Frank and Dennis dress up in police costumes while Charlie dresses as Serpico to expose them.

Charlie inadvertently puts Paddy's Pub up as the grand prize in a radio dance marathon, so the gang must win the competition -- against the enemies they've made so far -- to keep the bar.

Charlie and Dee freak out when they eat what they think is human meat. Mac and Dennis take up hunting and go after the most dangerous prey of all -- man.

To profit from high gas prices, Mac, Dennis, and Charlie fill barrels of gasoline and sell them door-to-door. Dee and Frank plot to brand Bruce Mathis a terrorist.

Mac and Frank hold a contest where the winner will be the billboard model for Paddy's. Charlie and Dee set out to create a viral video.

When Charlie learns that The Waitress has a boyfriend, he enlists Mac's help in catching the guy so Charlie can beat him up. Trouble is, Mac is the one who's dating the waitress.

Mac's revenge-obsessed father is released from prison and Mac and Charlie fake their deaths to save their lives. Frank and Dennis discover a glory hole in the bathroom.

Mac and Charlie continue their misadventures in avoiding Luther Mac. Dennis and Frank investigate the world of anonymous sex.

Frank and Charlie find that someone has defecated in their bed and hunt for the culprit. Meanwhile, Dee leads a "Sex and the City" style night on the town.

The gang kidnaps a newspaper critic who dubbed Paddy's Pub "the worst bar in Philadelphia".

Dennis plans on publishing an account of his sexual exploits and ends up in a rehab facility. Charlie and Dee try on each other's lives for size.

After Dee is hospitalized for a heart attack, she and Dennis try to adopt a healthier lifestyle. Charlie and Mac become office workers to get on-the-job health insurance.

In an attempt to turn their bar into a Philadelphia landmark, the gang tells the story of how Paddy's Pub was historically relevant during the Revolutionary War.

The gang redecorates a poor family's home a la Extreme Makeover: Home Edition.

Charlie stages a rock opera based on his song "The Nightman," and recruits the rest of the gang to help him with it.

Frank, Mac, and Dennis try their hand at real estate. Dee arranges to be a surrogate mother. Charlie tries his hand at law.

The Gang tries to expand their horizons by going on a road trip to the Grand Canyon.

Mac and Dennis try to keep the bar afloat in the tough economic times; Frank starts a family business with Dee; newly poor people gather outside the bar.

Dee, Dennis, and Charlie attempt to stage an intervention on Frank, who they feel is no longer fun to drink with. Meanwhile, Frank attempts to bang Aunt Donna, who Mac is also interested in banging.

The Waitress is getting married; Dee, jealous that she's beating her to the altar, tries to derail the wedding. Charlie reluctantly tries online dating.

The Gang describes the trials and tribulations they went through during Game 5 of the World Series, hoping that the judge will clear them of all the citations they received.

The Gang puts on a wrestling show for the returning troops. Meanwhile, the soldier Dee has been chatting with online is not what she expected.

When a merchandising convention comes to town, the gang tries to develop marketable products in an attempt to build the Paddy's brand.

Mac and Dennis decide to spend some time apart; Charlie lends his feline expertise to help Dee find her cat.

Dennis reveals his foolproof system for seducing any woman to the rest of the gang, but they don't grasp the concept.

When Dee gets a part in the new M. Night Shyamalan film, Mac and Charlie seize a chance to pitch their movie script.

After being banned for 10 years from a local drinking competition appropriately named "Flipadelphia," the gang tries to reignite their old rivalry with another local bar.

Mac, Charlie, Dennis, Dee, and Frank embark on a holiday adventure filled with stolen toys, childhood videos, naked elves, and a bloody run-in with Santa Claus.

Mac pulls out the big guns to protect the sanctity of marriage, while the rest of the gang reaps the rewards of marital bliss.

Marital bliss turns to marital business, as the gang experiences the emotional and economic tribulations of divorce.

The gang attempts to find adventure on the sea after they purchase their 'new' boat.

After correctly answering a radio trivia question, Mac finally makes it big. Meanwhile, the Reynolds start their own internet podcast.

Mac and Charlie try to fix up an abandoned pool in order to beat the heat wave; Dennis and Dee try to beat the heat in a more 'dignified' and 'upper-class' way.

Charlie and Mac set-up a truly odd couple after Mac's mom burns the house down; Frank discovers the importance of paternal care when Dee falls ill.

The gang gets a real 'scare' after Dee reveals she's pregnant, forcing the guys to recall their last hazy Halloween Party to determine if one of them might be the father.

A blast from the past prompts the guys to expand membership and Dee to re-consider her future.

Dee takes a job as a substitute teacher and exposes her students to the culture of Paddy's with a field trip to see the Gang's take on Lethal Weapon 5.

Keeping the basement rodent-free drives Charlie to the brink; the gang throws Charlie a surprise party.

Things go awry as the Gang travels to Atlantic City for a charity benefit. While Frank, Dee and Mac try to survive in the woods, Dennis and Charlie hitch a ride to the city.

Before Dee's baby arrives, The Gang tries to figure out who is the father by throwing a house party for all her former flings.

Frank wants to marry a prostitute and the gang can't talk him out of it. While Dee sets out to burnish the hooker's heart of gold, Charlie takes a different tack: He tries to set Frank up with another woman.

Dee and Dennis take the gang to their favorite childhood vacation spot on the Jersey Shore. Things aren't quite as they remember them. Still, Mac, Frank and Charlie have the times of their lives; Dee and Dennis not so much.

Frank finds himself in the child beauty-pageant business and fears that people might think that he's in it for the wrong reasons.

While Dee tries to weasel her way out of an IRS audit, the guys set up a new (and, they say, democratic) way of running Paddy's.

Frank's long-lost brother shows up unexpectedly and spills family secrets.

It's not always sunny in Philadelphia: An apocalyptic storm is bearing down on the City of Brotherly Love, and everyone's in panic mode -- except for Frank.

Another rainy day in Philadelphia. The gang can't go out and play, so they stay indoors and play a board game of their own devising.

While Dennis and Charlie track down an annoying shusher the old-fashioned way, Dee and Mac cyberstalk him. Frank is online as well, trying to boost business at the bar.

The gang sneak into a residence to "extract" an "artifact," only to discover that someone is home. Uh-oh.

Mac tells a befuddled priest why his fatness is the fault of the other members of the gang.

Traffic problems as a result of the President's visit to Philadelphia makes it difficult for The Gang to see the summer's biggest film - "Thunder Gun Express".

The Gang attends their high school reunion with a lot to prove. Old friends are met and new foes are made as the gang trips down memory lane.

The Gang hatches a plan to repair their tarnished image in the eyes of their old high school classmates.

Dennis and Dee's ailing grandfather Pop-Pop is wasting away in the hospital, and they have to decide whether or not to pull the plug.

Frank concocts a plan to undercut the garbage men union and get the contract to collect the city's trash.

Dennis and the Gang crash Maureen's wedding to make certain he'll be able to sever all ties; later on they fighting some zombies - Halloween!

Charlie and Dee find a romantic connection with two members of one of Philly's wealthiest families; Mac, Dennis and Frank try to get a piece of the action.

The Gang step into the therapist's office to work through their mountain of issues; Dennis' psychology is exposed as abnormal indeed.

The Gang rallies around Charlie's mom as she battles cancer; Frank loses his memory and his mind in a quest for buried treasure.

With Charlie under his wing, Frank cleans up so he can get his hands dirty and help out his old company with one last big merger.

After slipping into an unhealthy obsession with computer games, The Gang wrestles to define the difference between the real and the virtual worlds.

Every member of The Gang has something to celebrate at Guigino's, Philly's finest eatery.

Frank accidentally hits Dennis' car, and The Gang decides to hold a trial at Paddy's to resolve this legal issue.