First up, predictions for the show, and specifically the main event tonight. There seems to be some buzz about it, although I don't think it'll affect the buyrate.
My bold prediction: I think they're in panic mode and that means WWE CHAMPION RYBACK.
Bryan Alvarez had a really cool scenario if they want to screwjob the shit out of it: Cena or someone else beats up Punk before the match even starts, and Ziggler cashes in on him and wins the WWE title. Then Ryback can beat Ziggler in the Cell and supposedly walk out as champion. Next night on RAW, the title gets taken away from Ziggler because his briefcase was only good for the Smackdown belt, so we end with Punk still champion, Ziggler still carrying the briefcase, and Ryback still undefeated. If it was me I'd just beat Ryback by doing the Warrior-Rude finish and be done with it, but then I'm not exactly a Ryback booster.
Apparently there's other matches tonight too.