Page "It's Always Sunny in Philadelphia" Paragraph 12

The first season ran for seven episodes with the season finale airing September 13, 2005.

According to McElhenney, word of mouth on the show was good enough for FX to renew it for a second, which ran from June 29 to August 17, 2006.

To boost ratings and achieve more mainstream exposure, Danny DeVito joined the cast in the first episode of the second season, playing the father of Dennis ( played by Glenn Howerton ) and Sweet Dee ( played by Kaitlin Olson ).

Reruns of edited first season episodes began airing on FX's parent network, Fox, in 2006, but after only two episodes (" Gun Fever " and " Charlie Gets Molested "), Fox removed the show from its lineup.

The show would not be shown on broadcast television until 2011, when FX began offering the show for syndication.