Vitali Klitschko (sp?) vs Holyfield.
Klitschko gets a lot of criticism, but I think he's pretty formidable. Huge guy that uses his size and weight well, I think I'm right in saying he's never seen the canvas, and a pulverising jab. He may never have really been tested given the calibre of his opponents, but that's not his fault.
He lost on a stoppage by Lewis, but that fight showed that he wasn't phased by some real power (an out of shape Lewis still hits like a train).
I think Holyfield's best tactic would be the usual one of butting, looking for a cut. Other than that, I think Vitali is simply too big and too awkward for him.
Powerlifts: 500/363/573 @ 220 belt only
front squat: 403
dips: bodyweight + 176 x 4
military press: 232