Need help choosing games......

I haven't played on the PC in awhile, but now that I have a newer rig I should be able to run games better. I need help deciding which ones I should get first; above are some of the ones I was thinking about getting. My specs: Athlon 64 X2 5000+ Black Edition, 2 gigs of RAM, XFX Geforce 9800 GTX, and Windows XP. Thx in advance

Orange Box, or if you're more single player, Bioshockkrazyorange

Orange Box has only one multiplayer game, it's still easily two or three times the length of bioshock single player wise. Also,out of the games you listed, Bioshock is the best

Definitely get Crysis. Lots of replay value there (plus it comes with sandbox which just increases the replay value). Also, Call of Duty 4 is good also (not great like everybody else says IMO, but still good). BioShock, FEAR, and STALKER are all nice too. Here is my list in order of what to get:

Crysis

STALKER

FEAR

BioShock

Call of Duty 4