It's Always Sunny in Philadelphia (season 5)

The fifth season of the American comedy television series It's Always Sunny in Philadelphia premiered on FX on September 17, 2009. The season contains 12 episodes and concluded airing on December 10, 2009. Beginning with this season, the episode's aspect ratio was changed from 4:3 to 16:9.

It's Always Sunny in Philadelphia (season 5)

The fifth season of the American comedy television series It's Always Sunny in Philadelphia premiered on FX on September 17, 2009. The season contains 12 episodes and concluded airing on December 10, 2009. Beginning with this season, the episode's aspect ratio was changed from 4:3 to 16:9.