I'd want the Inner Sakura to teach me the skills, but I'd wanna spar with Naruto to "think outside the box" and to nab some of that luck he's got in spades.
I'd want Kakashi's style and fighting skills (especially the one that calls the dogs... They rock!)
I guess with those two, I'd wanna fight for leaf. Every other country thus far seems pretty messed up at the moment. Gaara's messed up. I don't know if that is a cause or an effect of living there.