I'll narrow that down, if you don't mind, to Nu-Who. I think Classic Who as well would be too much to filter in one go.

Favorite Character: The Doctor's too obvious, so, Mickey.
Least Favorite Character: Martha.
Character with the best hair: Oh, Ten, of course.
Character with the best eyes: Lady Christina (Just a shame about her everything else.)
Character I'd most want to kiss: Sally Sparrow.
Character I'd most likely screw: Captain Jack Harkness. (Like, who hasn't?)
Character I'd make lunch: Amy. The girl needs a good hearty meal.
Character I'd go singing in the rain with: Ood Sigma.
Character I'd go shopping with: Captain Jack Harkness.
Character I'd go dancing with: Wilf. You know he's a mover.
Character I'd take over the world with: Wilf. Tea and biscuits for all!
Character I'd most want to cosplay as: A weeping angel, just to scare the living shit out of people.
Favorite M/M pairing: Captain Jack / Captain John Hart (Yeah, I know, not strictly Who, but sue me).
Favorite F/F pairing: The Cassini sisters.