Two words: VIVA PINATA

And yeah, get Orange Box on the PC. If your PC can run Bioshock it will run Orange Box with a much better framerate than you'll get on the 360. You'll also get mods on the PC.

Perfect dark zero is an alright game, especially if you just want to vs. a mate or something and have a few coms in the level as well

GoW boring !!!!
I think in one player It's better than halo
ofcourse you must buy halo
bio shock is a very very very very good game
blue dragon is great game if you like J-RPG
also enchanted arms
lost planet very very good

I also played Lost Planet on PC, not overly impressed with that.

Bioshock is sweet.

Yep my PC is a bit of a monster, I only really have bought the 360 for XBLA and Xbox Live because I was really impressed with that so far.

A few budget title games (under $40 for sure):

Earth Defense Force 2017
Viva Pinata
Test Drive Unlimited
Dead Rising
Saints Row
Crackdown
Fight Night Rnd 3

Full Price games:

Forza Motorsports 2
Halo 3
Blue Dragon
Eternal Sonata (I know you said no RPGs but...)

lost planet is great in XBOX LIVE

Good to come aboard the Microsoft train!!!!

Okay on a serious note here is the list of games that are budget but are good:

Call of Duty 2
Call of Duty 3
Final Fantasy XI
Enchanted Arms
Dead Rising
Project Gotham Racing 3
Marvel: Ultimate Alliance and many more just can't remember its just so many!!

Okay serious must-haves:

Halo 3
Rainbow Six Vegas
The Orange Box
Gears of War
GRAW 2
and many more I'm at work so its hard for me to stay focus.

Good to see that your a 360 owner Origin. 8)

Prey is another good budget FPS, but it's also available on PC.
Saints Row and Crackdown like MSB said, are both really fun.
RB6:Vegas has a great multiplayer IMO


For XBLA: Geometry Wars and CastleVania:SoTN are both great.

 Forgot about those, yeah OriGin what king_of_the_castle said....lol

Get Ms. Pacman.

I'm serious.

And Uno while your at it.