Ok, for me I gotta go with:-

Heavyweight - Wladimir Klitschko
Cruiserweight - David Haye (I think he'll beat Mormeck)
Light-Heavyweight - Bernard Hopkins
Super-Middleweight - It's too tough to call between Calzaghe & Kessler
Middleweight - Jermain Taylor
Junior Middleweight - Floyd Mayweather
Welterweight - Miguel Cotto
Junior Welterweight - Ricky Hatton
Lightweight - Juan Diaz
Super Featherweight - Manny Pacquiao
Featherweight - Rocky Juarez (I think he can knock John out, would love to see the fight)
Super Bantamweight - Rafael Marquez
Bantamweight - Hozumi Hasegawa
Super Flyweight - Christian Mijares
Flyweight - Vic Darchinyan (although I really want Jorge Arce to drop down and beat him, I think the fight would be money)
Junior Flightweight - Hugo Cazares (by default coz he's the only guy in this division I've seen)
Strawweight - Ivan Calderon

If you look around though, some of the lower weights have the potential to have some great fights.