Everyone should get Infamous (if they haven't already), amazing game.
For the people asking, Dead Nation is really good, played it at a friends house and had a lot of fun, it's like a better looking Left 4 Dead, but from a top down view. It's also co-op, so that's cool.
Bet with Conegamer and AussieGecko that the PS3 will have more exclusives in 2011 than the Wii or 360... or something.