InFamous is a wonderful game. Shame I already own it. I highly recommend it to everyone who hasn't played it and can't decide which two they want. Ratchet & Clank: Quest for Booty is great but only if you've played Tools of Destruction, otherwise I wouldn't recommend it (unless you plan on picking up the prior and playing it later).

I'm pretty set on grabbing Wipeout HD but I honestly can't decide whether to grab Dead Nation or LittleBigPlanet. I used to own LBP and I got bored of it really fast, but I never went into the creation aspect of it and only played the premade levels, which is probably why.

Dead Nation looks cool though!