Richard Paul "Rick" Astley is an English singer-songwriter and musician.
Dennis Reynolds is obsessed with Rick Astley's music, and listens to many of his songs.
It is a belief espoused by many, including the show's creators, that It's Always Sunny in Philadephia played a role in the advent of the Rick Roll . In Charlie Has Cancer, Dennis recieves a phone call from Dee in his car as he blasts "Never Gonna Give You Up" and sings along. Dee aks "Hey Dennis, it's Dee. I was... What are you listening to?" Dennis responds: "Ah, Rick Astley. What's up?" This conspicuous exchage actually predates the first recorded rickroll by two years, which occurred in 2007.
- "Never Gonna Give You Up" (Charlie Has Cancer)
- "Together Forever" (The Aluminum Monster vs. Fatty Magoo)