I've gotta go with Paul Senior's mustache! I'm glad he made it on this thread! {Side rant: I haven't seen OCC in awhile...wonder how the the boys are getting along}
I'm not pro-nazi or anything, i've just always had an absolute love for that mustache. simple, clean, not overdone, and it's just so powerful you don't need the rest of the mustache.
(plus, it hides nose hairs perfectly without the hassle of a FULL mustache!)