Frank Shamrock and Sakuraba?
I hope not, but then again it could be entertaining. With Sakuraba, any match is an entertaining match whether he wins or loses.
Kathleen, you're right about jiu jitsu being the core of MMA but it is just one part of being a mixed martial artist. Stand up is just as important. Muay Thai and Boxing are integral elements in being a sucessful fighter. And a lot American fighters just get by with a strong greco-roman wrestling background (usually in addition with a little boxing or kickboxing).
Look at Mirko Filopovic a.k.a. Crocop. Has dominated Pride with just a kickboxing background. Crocop couldn't grapple if his life depended on it. Crocop's lack of ground fighting was evident in Pride Final Conflict. Vanderlai Silva, Fedor Emelianenko, and the Iceman are others who have excelled in Pride, primarily with a Stand Up background.
I have to admit that is why I like Pride better. More stand up fighting in it with a lot more knock outs. UFC tends to favour grapplers with its more restrictive rules.
Shinjitsu, there were hints of a possible Randy Coutour and Vanderlai Silva fight. Who knows now after UFC 46?
I know the Axe Murderer is dying to fight Vitor Belfort.