Well, I suppose I can add my picks to this thread now, as I've been enjoying everyone else's for a while now!
All Time Favourite: Frodo
Man: Aragorn
Woman: Eowyn
Elf: This is a tough question, having so many great ones to choose from! Galadriel, I must finally say, although I'm sore tempted by Feanor and Finrod (and sneaking up from the rear--Celebrimbor!) Gotta love those Noldor!
Hobbit: Pippin!
Dwarf: Gimli, but Mim is also quite amusing (don't like him as well as Gimli, though!)
Wizard: Gandalf the Grey
Bad Guy: Another tough one! If you could call Gollum bad, he'd go here, but also Glaurung (OK, he's a dragon, not a 'guy' but he's REALLY BAD!)
Others: Bilbo, Bombadillo, Yavanna, Gwaihir, Huan, Luthien and Arwen her Third Age reflection, the comically drunken Elves in Thranduil's hall (*snicker*), ah, I can't think of anything else right now! I might fill it in a little differently if I try this again later!

For now, I take my leave.
Cheers,
Lyta