Predictions:
BigShow knocks Taker out, but Jericho steals the title from under his nose thus provoking the fall-out between Jerichow, where in the next tag title defense a belittled Show knocks his partner (and WHC!) out and just walks out on him and the titles. Next PPV = Big Show/Taker/Jericho AGAIN.... Just so Jericho can retain without Taker taking a one-on-one pin... Jericho carries the WHC into WM only to job for the deadman.
Cena retains. Seeds are sewn for the DX split... This'll take a while though as I think it'll be HHH/HBK in the final three of the Rumble and eliminating each other that will be the kiss of death.
Then again, no real point trying to predict things cos WWE clearly don't know what they're gonna do from one minute to the next anyway.