This is the first easy choice for me. It is Punk vs Cena at MITB and it isn't even close. Not only was it a great, in-ring encounter, but it had a Rock vs Hoganesque crowd to boot. That is the stuff that legendary matches are made out of, and I guarantee, when lists of the top 20 matches ever are made in the future, serious consideration is going to have to be made to include this match on them.