Top 10 It's Always Sunny In Philadelphia Episodes

Demonstrate value. Engage physically. Nurturing dependence. Neglect emotionally. Inspire hope. Separate entirely. The D.E.N.N.I.S. system.

This episode is a shining example of character work, and a clever, Sunny twist on the sitcom cliche of the sexually successful character trying to educate the others in how to charm members of the opposite sex. Dennis' dark, manipulative system perfectly displays the worst, and simultaneously best, parts of his character, and the added bonus of the rest of the gang being useless at using his system is the perfect way to create a must-see episode.

Dennis' explanation of his system is a shining display of his damaged psyche and self-love, while the interest of the others in the Paddy's Pub gang shows their deifying of Dennis, and their child-like intrigue in his manipulation is frightening. Dennis is the star in this episode, constantly trying to prove his system works, and caring more about proving this point than the emotions of anyone unfortunate enough to cross paths with the gang.

A highlight is when Mac and Frank reveal their systems, swooping in on the damaged girls after Dennis has had his way with them and exploiting their emotional state. These people are the worst, and it makes for hilarious TV.