Like Dennis' famous transporter of gods car speech, Frank's iconic Man Cheetah costume and quote are also from the sixth episode of It's Always Sunny In Philadelphia's 10th season.

It’s Always Sunny in Philadelphia, Season 17, Episode 5, pushes Dennis and Dee’s limits while Mac and Charlie embark on a strange side quest.

The gang is in a never-ending story. “It’s Always Sunny in Philadelphia” has been on the air for a record 20 years, running for more seasons than any other live-action sitcom. Now, star ...

As “It’s Always Sunny in Philadelphia” enters its 17th season after nearly two decades, its team of writers/stars (Charlie Day, Glenn Howerton and Rob Mac) has become a well-oiled machine.

After 20 years, Glenn Howerton is finally weighing in on the It’s Always Sunny in Philadelphia fan theory that his character, Dennis Reynolds, is a serial killer. “Look, I don’t want to ...

It’s Always Sunny in Philadelphia comes back with two episodes tonight, July 9, at 9 p.m. ET on FXX. New episodes will air on FXX every Wednesday at 9 p.m. through August 20. How to Watch It’s ...

Glenn Howerton, who stars as the sociopathic Dennis Reynolds in the long-running sitcom “It’s Always Sunny in Philadelphia,” revealed that he once almost left the show, which is currently in ...