Okay, I have a few more.

Courtesy of Spicoli's suggestion
Librado Andrade & a Chimp




Duh, I can't believe I forgot
Sultan Ibragimov & Barney Rubble




Roger Mayweather & Lou Gossett Jr




Nikolai Valuev & Harry of Harry & The Hendersons




Bernard Hopkins & The Gimp from Pulp Fiction




And of course from Danny's suggestion
Floyd Mayweather Sr & The Predator