Get yourself on Steam. If you have any interest in FPS both online/offline get Orange Box.
If you like RTS then you have much to chose from. As a variant on the traditional RTS I suggest Homeworld 1 & 2.
Then I suggest you hit gamerankings and check out the huge (and I mean huge) number of titles now available to you.
You can also revel in the fact that you can pick up older PC games cheap and many of them will look/play as good as anything on current gen consoles.
Try to be reasonable... its easier than you think...







