Neji vs. Sasuke
I'd like to see Sasuke dealing with this freakish Byakugan... 1k sight radius is quite a thing. Also Neji's def and off are one of the best in the whole series. I wonder how he would deal with such a fast opponent who can basically see through his Taijutsu...
Yondaime vs. Orochimaru
Don't care who wins... just that these lame discussions are going to an end.
Anko vs. Kurenai
Add fewer clothes and a little mud and Wuzaaaaa