Lets try this again...

Step #1. Copy and Paste the master lists of the catagories

Step #2. Vote for upto 3 games for each catagoy

Step #3. Hit Reply

Hopefully this makes more sense. It's not that we're trying to figure out the absolute best game for a given genre, but what the top few are, so that a new X360 owner fan see what other 360 owners on VGC reccomend.

Results Via Google Spreadsheet!

______________

Best Xbox 360 Game

Best FPS/TPS

Best Racer

Best Action/Sandbox Game

Best Adventure

Best RPG (J and W)

Best RTS/Strategy Game

Best "Other" Game

Best Xbox 360 (Console) Exclusive

Best MultiPlatform Game

Best Fighting Game

Best XBLA Game

Hopefully this makes some sense.

Best Xbox 360 Game

• Mass Effect
• GTA 4
  
• Call of Duty 4

Best FPS/TPS

• Gears of War
• Halo 3
  
• Call of Duty 4

Best Racer

• Forza 2
• Burnout Paradise

Best Action/Sandbox Game

• GTA 4
  
• Crackdown

Best Adventure

• Assassins Creed
• Condemed

Best RPG (J and W)

• Mass Effect
• Oblivion
• Lost Odyssey

Best RTS/Strategy Game

• Command & Conquer 3 Tiberium Wars

Best "Other" Game

• Ikaruga
• Viva Pinata
• Ace Combat 6

Best Xbox 360 (Console) Exclusive

• Mass Effect
• Lost Odyssey
• Gears of War
  

Best MultiPlatform (Wii/PS3/Last-Gen) Game

• Grand Theft Auto IV
• Call of Duty 4
  

Best Fighting Game

• Virtural Fighter 5

Best XBLA Game

• Castlevainia: SOTN
• Puzzle Quest: COTW
• Ikaruga
• Rex HD

Best Xbox 360 Game
Mass Effect
Gears of War
Bioshock


Best FPS/TPS
COD 4(just plain fun)
MOH: Airborne (I really apreciated the lean mechanic)
R6 Vegas(best cover system ever)

Best Racer
Not a racing fan

Best Action/Sandbox Game
GTA4

Best Adventure
Assassins Creed

Best RPG (J and W)
Mass Effect
Lost Odyssey

Best RTS/Strategy Game
C&C
played on pc so I'm not sure how well it translated to console controls

Best "Other" Game
The Darkness
Condemned CO
Neither fits pure shooter IMO we need a horor category

Best Xbox 360 (Console) Exclusive
Mass Effect
Gears of War
Halo 3

Best MultiPlatform (Wii/PS3/Last-Gen) Game
GTA 4
The Darkness
Condemed CO

Best Fighting Game
Fight Night Round 3
played the demo a lot not really a fighting fan

Best XBLA Game
Pinball
Galaga

Thanks for the update! Hopefully this should work better.

Best Xbox 360 Game - Portal/The Orange Box, Bioshock, Rez HD

Best FPS/TPS - Bioshock, The Darkness, Earth Defense Force 2017

Best Racer - Forza 2, PGR 4, [Haven't played a third]

Best Action/Sandbox Game - Condemned: Criminal Origins, Tomb Raider Legend, Castlevania SotN

Best Adventure - Kameo: Elements of Power, Prince of Persia Classic, [Haven't played a third]

Best RPG (J and W) - Oblivion, Mass Effect, [Haven't played a third]

Best RTS/Strategy Game - [Haven't played any]

Best "Other" Game - Rez HD, Portal, Ace Combat 6

Best Xbox 360 (Console) Exclusive - Bioshock, Condemned: Criminal Origins, Rez HD

Best MultiPlatform Game - Portal/The Orange Box, Call of Duty 4, Oblivion

Best Fighting Game - [Haven't played any]

Best XBLA Game - Rez HD, Cloning Clyde, Castlevania SotN

Best Xbox 360 Game

• Halo 3
• Oblivion
• Saints Row

Best FPS/TPS

• Halo 3
• Call of Duty 4
• Gears of War

Best Racer

• Forza 2
• Burn Out Paradise

Best Action/Sandbox Game

• Saints Row
  
• Crackdown
• GTA 4

Best Adventure

• Assasins Creed

• Devil May Cry 4
  

Best RPG (J and W)

• Oblivion
• Mass Effect

Best RTS/Strategy Game

• Halo Wars

Best "Other" Game

• Rock Band
  
• Viva Pinata

Best Xbox 360 (Console) Exclusive

• Halo 3
• Saints Row
• Crackdown

Best MultiPlatform Game

• GTA 4
  
• Rock Band

Best Fighting Game

• DOA 4
  

Best XBLA Game

• Catan
• Undertow

Aren't games like Mass Effect, Gears of War and Bioshock on PC as well?  So should they be allowed under Console Exclusive?!

Best Xbox 360 Game

• Lost Odyssey
• Overlord
• Crackdown
  

Best FPS/TPS

• Bioshock
• Halo

Best Racer 

Best Action/Sandbox Game

• Crackdown
   

Best Adventure

• Overlord
• Lego Star Wars: The Complete Saga
• Kameo

Best RPG (J and W)

• Lost Odyssey
• Oblivion
• Mass Effect

Best RTS/Strategy Game

Best "Other" Game

• Viva Pinata

Best Xbox 360 (Console) Exclusive

• Lost Odyssey
• Crackdown
• Mass Effect

Best MultiPlatform Game

• Bioshock
• Overlord
• Oblivion

Best Fighting Game

Best XBLA/O Game

• Puzzle Quest
• Assault Heroes
• Psychonauts

Best Xbox 360 Game

Gears of War
Forza 2
Crackdown

Best FPS/TPS

Gears of War
The Darkness
GRAW

Best Racer

Forza 2
Brnout Paradise
PGR 4  

Best Action/Sandbox Game 

Crackdown
GTA 4
Saints Row

Best Adventure

Tomb Raider Legend
Assassins Creed
Just Cause

Best RPG (J and W) 

Mass Effect
Blue Dragon
Eternal Sonata

Best RTS/Strategy Game 

Viva Pinata

Best "Other" Game

Guitar Hero 3

Best Xbox 360 (Console) Exclusive 

Gears of War

Best MultiPlatform Game

Best Fighting Game

Ninety Nine Nights(?)

Best XBLA Game

Ikaruga
Geometry Wars
Carcasonne

Better, will you be updating the OP with the totals?

Best Xbox 360 Game

• Halo 3
  
• Gears of War
  
• Ninja Gaiden 2

Best FPS/TPS

• Gears of War
• Halo 3
  
• FEAR

Best Racer  

• GRID
• PGR4
• Sega Rally

Best Action/Sandbox Game 

• Dead Rising
• Ninja Gaiden 2
• GTA4
  

Best Adventure

• Castlevania SOTN
  
• Overlord
  
• Mass Effect
  

Best RPG (J and W) 

• Mass Effect
• Oblivion
• Lost Odyssey

Best RTS/Strategy Game 

• N/A

Best "Other" Game

• Rock Band
• Viva Pinata
• Virtua Tennis 3
  

 Best Xbox 360 (Console) Exclusive 

• Halo 3
  
• Gears of War
  
• Ninja Gaiden 2
  

Best MultiPlatform (Wii/PS3/Last-Gen) Game

• Grand Theft Auto IV
• Rock Band
• Call of Duty 4

Best Fighting Game

• Street Fighter 2 Turbo
  
• VF5
• Streets Of Rage 2
  

Best XBLA Game

• Castlevainia: SOTN
• Ikaruga

I'll update OP totals now.