D:
That was alot of games
Check on Sourceforge for Open-Source projects, as there are plenty of very good game projects.
As for FPS games, I’ll recommend Sauerbraten, Alien Arena & OpenArena.
These are all multi-platform, so if you want to try the mystical thing that is Linux, you can try these on it.
As for commercial games, S.T.A.L.K.E.R.: Clear Sky is brilliant.
EDIT:
Seeing as you have Black & White, try Black & White 2; you may like it.
If you like racing games, Colin Mcrae: DiRT is good.
RTS games are try Age of Empires 3 and/or Homeworld 2 and/or Supreme Commander.
For Turn-based strategy, you may want to try Civilization 4 Complete Edition.
I’m not terribly sure on newer games, as my laptop can’t run them well 
Edit #2:
If you want to play an MMO, LOTRO is supposed to be good.
If youre in to LotR, i could recomend LotR: Fellowship of the ring.
[COLOR=‘White’][TROLLING]Or have you ever tried half life? great game![COLOR=‘White’][/TROLLING]
Myst IV is good. V and Uru, not so much.
only reason i have Lotr was it came with a ea game pack that had black and white and i wanted black and white.
EDIT: good to see this thread finally dying. 
Once again, I say get the Legacy of Kain games. Their story is as good if not better than the Half Life games. The gameplay is great as well.