A training partner.
Oh wait is this supposed to be celebs and the like: Well of course I want to meet Elvis
Oh wait I suppose this should be people who are still alive:
Chuck Norris, Peyton Manning, & Lisa Marie Presley. I've actually had dreams where I was friends with Lisa Marie, and Chuck Norris, and Peyton Manning is my current favorite football player. Eddie McCaffery is my all time fav tho' I wouldn't mind meeting him either.