It's Always Sunny in Philadelphia is an American television sitcom that premiered on FX on August 4, 2005, and moved to FXX beginning with the ninth season. It's. The ninth season of It's Always Sunny in Philadelphia aired in the Fall of 2013, beginning. The sixth season of the American comedy television series It's Always Sunny in Philadelphia premiered on FX on September 16, 2010. The season contains 14 episodes and. Rob, Kaitlin, Glenn & Danny talk about some episodes that will appear in Season 6 of the hit show It's Always Sunny in Philadelphia. This video is courtesy. Watch Mac Fights Gay Marriage online. Stream It's Always Sunny in Philadelphia season 6, episode 1 instantly. 5.0/5.0 rating. See It's Always Sunny in Philadelphia Season 10 on the Amazon Movies and TV store. Great savings on a wide range of DVD, Blu-ray, and 3D-Bluray titles. GET INFORMED. Industry information at your fingertips. GET CONNECTED. Over 200,000 Hollywood insiders. GET DISCOVERED. Enhance your IMDb Page. Go to IMDbPro » Find all It's Always Sunny in Philadelphia Season 6 online, episodes, news, info and more. Watch the latest It's Always Sunny in Philadelphia season with SideReel. Bloopers from Season 6 of It's Always Sunny in Philadelphia. With Charlie Day, Glenn Howerton, Rob McElhenney, Kaitlin Olson. Four young friends with big egos and slightly arrogant attitudes are the proprietors of an Irish bar.