December is a great month in general for boxing even if we were not getting the showdown between Floyd Mayweather and Ricky Hatton. Other then what you mentioned hitmandonny ones that come to mind for me are,

At Foxwoods casino in Connecticut December 1st
Nonito Donaire will make the first defence of his title since beating Vic Darchinyan who is by chance on the same card, Vernon Forrest will defend his title, Antonio Tarver and a few others as well. I'll be attending this one

Another fight I wish I could see is Edwin Valero vs Juan Carlos Salgado for Valero's WBA Super featherweight title, both guys are undefeated power punchers. Valero 22 KO's out of 22 wins, Salgado 13 KO's out of 18 wins.
I think that fight is on the 15th