New
#11
With that GTS 250 you'll struggle to max anything like Crysis, but you should be able to play at reasonable enough res and settings to be pleasing...
I recommend Call of Duty 4: Modern Warfare and Modern Warfare 2, because CoD4 was a great game, and the sequal wasn't too bad.
Add to that Crysis and/or Crysis Warhead, as they are rather satisfying games (what could be more entertaining than cloaking, leaping out of the bushes and grabbing a Korean or alien around the throat with one hand and using them as a meat shield whilst you take care of everything else with your equipped weapon?? ... )
Battlefield Bad Company 2 is supposed to be really good, I'm yet to aquire it, but it has some great reviews.
Also, Borderlands. Because it is also thoroughly entertaining, and filled with commedy.