Mutombo? Ben Wallace? Quack? Bill Russell? Wilt the viagra Stilt? Big Gheorge? Shawn "you mean you haven't dunked on me yet?" Bradley? Manute Bol? Ewing? D-Rob? Hakeem?
Personally I'd like to take out all the defensive players of the year in particular Mutombo and Wallace. I'd use Shaq's boobies to climb up to his face... I'd also love to dunk on Antoine Walker. Dunking on the smaller guys wouldn't be as fun, except maybe John Starks, Kobe, Reggie... just the ones I dislike in general.
Wouldn't mind throwing one down on MJ either but that would be like dunking on my sister - way too disrespectful!
