Fabricio Werdum vs. Kongo. This would be a very interesting fight. This fight could determine the number one contender for the UFC heavyweight belt (after the tournament is ended between Big Nog, mir, lesnar and couture).
Actually, if Werdum wins his next fight (UFC 90 against Junior dos Santos) he will be #1 contender and is guaranteed a title shot, so he'd be next in line.
Personally I don't think Kongo has ever done anything to be considered a #1 contender and shows a real lack of ability on the ground...
Although I do agree it would be a good fight... IMO Fabricio already deserves the #1 contender spot, but I could imagine him fighting Valasquez for the honour as long as Werdum wins his next fight and Cain bounces back well from injury
I know Fabricio is next in line and definitely deserves a shot, but him and kongo would be a fun fight to watch.