Didn't Know About It's Always Sunny in Philadelphia: Many Interesting Facts About This Film: It's Al

There's only one reason to compare the largely amoral bar keepers that populate FXX's It's Always Sunny in Philadelphia with the serene '50s vibe of The Adventures of Ozzie and Harriet: With its 13th season premiering on September 5 and a 14th season already ordered, It's Always Sunny will soon tie Ozzie as the longest-running live-action comedy sitcom in the history of television.
Before that milestone, the gang of Paddy's Pub still has a 13th season to get through without succumbing to the effects of sniffing gasoline. Check out some facts on the show's history, its alternate-universe Dee, and how the production almost killed national treasure Danny DeVito.