It's Always Sunny in Philadelphia Season 5 Episode 10 The D.E.N.N.I.S. System 2009
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Dennis reveals his foolproof system for seducing any woman to the rest of the gang, but they don't grasp the concept.
- Released: 2009-11-19
- 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
