It's Always Sunny In Philadelphia - 10 Funniest Dennis Reynolds Moments
2. The D.E.N.N.I.S System
This is possibly Howerton's stand out moment on the show, of which, as has been discussed, there are many.
During the season five episode aptly-named The D.E.N.N.I.S System, our resident psychopath reveals to the gang his bulletproof plan that makes anyone woman fall madly in love with him. Don't worry, this is nothing like Hitch, as with Dennis, it's always horrifying.
Using his name as an acronym for the system, Dennis lays out a wonderful example of the plan in action, where he used it to seduce a pretty pharmacist. Fun fact, the pharmacist is played by Howerton's actual wife.
Through his horrible method, which includes mental and emotional manipulation, he essentially breaks the woman's spirit to keep her on the hook for his return. It's cruel stuff, but the presentation of the system is one of the best scenes in IASIP history.
This whole episode is amazing, from Charlie getting the system so wrong, Dee paranoid that the lovely Ben is using the system on her, Mac using his own system to pick up girls on the rebound, and, of course, Frank talking about his monster dong.
It's easily one of the best episodes that the series has ever produced and it should have been number one on this list. But we know why it's not, right?