It's Always Sunny in Philadelphia Season 5 Episode 10
The D.E.N.N.I.S. System
Dennis reveals his foolproof system for seducing any woman to the rest of the gang, but they don't grasp the concept.
5 - 12The Gang Reignites the RivalryDec. 10, 2009- 5 - 11Mac and Charlie Write a MovieDec. 03, 2009
- 5 - 10The D.E.N.N.I.S. SystemNov. 19, 2009
- 5 - 9Mac and Dennis Break UpNov. 12, 2009
- 5 - 8Paddy's Pub: Home of the Original Kitten MittensNov. 05, 2009
- 5 - 7The Gang Wrestles for the TroopsOct. 29, 2009
- 5 - 6The World Series DefenseOct. 22, 2009
- 5 - 5The Waitress Is Getting MarriedOct. 15, 2009
- 5 - 4The Gang Gives Frank an InterventionOct. 08, 2009
- 5 - 3The Great RecessionOct. 01, 2009
- 5 - 2The Gang Hits the RoadSep. 24, 2009
- 5 - 1The Gang Exploits the Mortgage CrisisSep. 17, 2009
