"It's Always Sunny in Philadelphia" returns tonight at 9 p.m. ET on FXX with the Season 17 premiere and a must-see comedy ...

In January, the characters of the FX series It's Always Sunny in Philadelphia showed up as court-appointed volunteers on an episode of the ABC sitcom Abbott Elementary. The crossover continues July 9.

Day and co-writer/star Rob Mac disagreed on whether or not cross over with "Abbott Elementary" and "The Golden Bachelor" in the new season ...

It's Always Sunny in Philadelphia might be made up of a gang full of narcissistic individuals, but the creative team has ...

The actors discuss playing best friends and roommates on FX's long-running comedy, which kicks off its 17th season Wednesday, ...