I think that halo/halo 2 is best for shoot em up forza is best for racing jurrasic park is best for RTS i can't really think of any other genres by the way if your gonna buy a game get jurassic park you won't be dissapointed it's alot of fun, if your looking for a game to expand on get halo 2 coz then you can also get the new maps and play multiplayer which is awsome.
As overrated as it is, Halo 2 is my favorite. I softmodded my XBox and am putting a 160GB hard drive in it . I've already got emulators for PSX, N64, SNES, NES, and Genesis with plenty of games on the XBox's standard 8GB hard drive.
Well if i really had to say what the best original Xbox game was, is Halo. It is by far the best game ever.
My favorites are Fable: The Lost Chapter and Halo 2 for the original XBOX, and i'm getting ready to buy PGR3 for the 360.
I beat you, I put in a 250 GB one It's really fun to have friends over and say, "Hey, want to play some Maro Kart?" "Sure!" And then look at their expressions when I start up my Xbox
Star wars jedi academy is nice.... i love like swinging the lightsabers. theres cheat too so u will like have unlimited forc e power. lightning all the way...lol
Elder Scrolls IV Oblivion is only for the 360 thought. I'd suggest getting a 360, because all of the great games listed here will also work on the 360, and when their sequels come out, they'll only be for the 360.