Costar Glenn Howerton, who lived with McElhenney, said Olson would suddenly be too drunk and need to stay over.

Season 4 has a number of A-level classics, e.g. “The Gang Solves the Gas Problem,” “Mac’s Banging the Waitress” and “Mac and ...

As has been shown time and time again across the many seasons of It’s Always Sunny In Philadelphia, Dennis, Dee, Mac, Charlie ...

When It’s Always Sunny in Philadelphia and Abbott Elementary crossed over earlier this year, the episode turned out to be a ...

Behind Danny DeVito's infamous stunt was the miracle of life that inspired the It's Always Sunny in Philadelphia team.

Halpern & Schumacker on "Always Sunny" Episode ... they're doing. It's really clever the way that they piece together their episode. It's really ambitious," Halpern added. Frank & Mr. Johnson ...

In a profile interview from earlier today, It's Always Sunny in Philadelphia creator Rob McElhenney explained why he now goes by "Rob Mac." ...

It's Always Sunny in Philadelphia is an amazing sitcom built off some basic, core elements and the season 7 episode "Chardee ...