I'll go with LeBron James, the Book of Dimes where he comes out and starts dishing to a bunch of people (the one with Bernie Mac). I also like the Nike one where Roethlisberger, Pujols, Rivera, Hunter, Urlacher, and Tomlinson are wearing masks.
Umm, who is the player you hate the most in any sport? If not hate, but strongly dislike. You want to beat the shit out of this guy like he's Joe Buck or something.