Deus Ex - hell yes
System Shock - oh yes indeed
I'll add too that I actually liked those two games. It was pretty neat seeing and playing Jedi Academy on the Q3 engine, worked out quite well. Multiplayer was pretty fun, push-pull all the time, it was fun.
In addition to playing the good old Westwood CnC/RA games, I myself though absolutely love the GTA series. GTA 1 was hilarious when it came out, top-down mass carnage action! GTA III is great, I liked it better than Vice City, but in San Andreas, they got pretty much everything they got wrong in VC right in SA. I always keep SA loaded up just in case I want something that I can jump in, play for 10 minutes and put down again, or play for a couple hours and not get bored with it. When you think of it, the GTA series has so much to do in it, unless you obsess and play it for hours a day, you could keep yourself busy with it for months.