If you could only get 3...

I would get Star Wars: Force Unleashed, Motorstorm 2: Pacific Rift, and the new Prince of Persia.

Far Cry 2

Dead Space

Resistance 2

Resistance 2

LBP

Fallout 3

Maybe resistance 2 MGS4 if did not have and killzone 2

or maybe resistance 2 killzone 2 and gears 2

That's kinda tough actually. I would wait for a review on Star Wars, if it scores over an 8 I will launch buy it, if not, I will wait till it goes down in price a little.

Definitely Bioshock.

Definitely Bionic Commando

LPB depending on how Star Wars turned out.