so GT tv just showed it's playstation exclusive and it's as everyone guessed, Playstation All Stars. This game looks really sweet and you can check out some of the footage (albeit very shaky) here. The link goes to a site called Gaming Everything.
I've only seen a couple of the vids but Parappa the Rappa is included as is Kratos, some Twisted Metal characters, and I thought I saw Fat Princess in there. I'm so excited for this game and hope that it does really well. ^_^