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

The sitcom returns Wednesday with its 'Abbott Elementary' crossover. Whether you're a longtime fan or new to the series, The ...

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

It's Always Sunny is funny not for its shock value, but because it feels like a recognizable slice of life. For all its toxicity, it is weirdly cheering -- invigorating, even. Acid can be addictive.

It's Always Sunny star Rob McElhenney isn't making everyone happy with his decision to legally change his name to Rob Mac.

The "It's Always Sunny in Philadelphia" actor who plays Ronald 'Mac' McDonald is getting a new name. "Mythic Quest" star and ...

It's Always Sunny writers gave the Abbott Elementary cast edgier lines for the second crossover episode, and Sheryl Lee Ralph had a stellar reaction.

Mac's Tavern bar owned by "It's Always Sunny in Philadelphia" stars will close after 15 years It's the end of an era for Mac's Tavern on Market Street in Old City.

It’s (Almost) Always Sunny in Philadelphia: How Three Friends Spent $200 to Create the Longest-Running Live-Action Sitcom in History and Help Build a Network hits bookshelves on Tuesday, July 1.

A new book about the history of It’s Always Sunny in Philadelphia reveals a scary behind-the-scenes story. In doing research for her new book, It’s (Almost) Always Sunny in Philadelphia: How ...