by Vera H-C Chan The way Hollywood watchers are telling it, the Oscar showdown between directors Kathryn Bigelow (" The Hurt Locker ") and James Cameron (" Avatar ") is a UFC grudge match of the century. Ten movies and five directors are competing, respectively, for Best Picture and best director, but the gossips have their sites locked on these two, who once shared two years (give or take) of wedded bliss. Gawker's calling the battle an " Explosive Exes Oscar Deathmatch .