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

Charlie Day: Wait, Danny, let me tell you a story about my old, old friend here. Spell McElhenney…Spell it. Danny DeVito: I ...

It's Always Sunny In Philadelphia stars Charlie Day and Danny DeVito discuss when the long-running sitcom will come to an end as season 17 begins.

Plus, Charlie Day and Glenn Howerton tell TheWrap which other sitcom they'd love to cross over with after "Abbott Elementary.

"Beyond season 18, I don't know... it could quite possibly be the end," says the star and executive producer to THR about the ...

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 ...

The It's Always Sunny in Philadelphia cast has thoughts on the worst things the gang has ever done, though some of their ...

Charlie Day: Wait, Danny, let me tell you a story about my old, old friend here. Spell McElhenney…Spell it. Danny DeVito: I barely got through eighth grade. Charlie Day: OK, alright, see that ...

"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 ...

Danny DeVito, left, and Charlie Day, photographed at Fox Studios in Los Angeles this month, are back for Season 17 of "It's Always Sunny in Philadelphia," which turns 20 this year.