It's Always Sunny in Philadelphia Season 4 2008
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The fourth season of It's Always Sunny in Philadelphia, premiered on FX on September 18, 2008. The season contains 13 episodes and concluded airing on November 20, 2008.
- Released: 2008-09-18
- Runtime: 22 minutes
- Genre: Comedy
- Stars: Charlie Day, Glenn Howerton, Rob McElhenney, Kaitlin Olson, Danny DeVito
- Director: Michael Rotenberg, Charlie Day, Glenn Howerton, Rob McElhenney
