Can DC Universe Online be a disappointment if you have no expectations for it?
Anyway, the games I'm at least hoping turn out good but I'm still skeptical of are Crackdown 2, Dead Rising 2, Alan Wake, and Heavy Rain. I'd say GT5, MAG, White Knight Chronicles, etc. but I don't exactly have real expectations for any of them.
actually, just thinking about games next year, I'm amazed by how few PS3 games announced I care about compared to 360 games, which is the total opposite of 2009.