Pulled from another forum, console games (Xbox 360 and PS3) and their NATIVE (not upscaled) resolution:
Assassin's Creed: 1280x720p - PS3
Assassin's Creed: 1280x720p - Xbox 360
Bioshock: 1280x720p - Xbox 360
Blast Factor Demo: 1920x1080p - PS3
Call of Duty 3: 1120x630p - Xbox 360
Call of Duty 4 Modern Warfare: 1024x600p (2xAA) - PS3
Call of Duty 4 Modern Warfare: 1024x600p (2xAA) - Xbox 360
Conan Demo: 720x576p - Xbox 360
Def Jam ICON: 1152x648p - PS3
FIFA 08: 1280x720p - PS3
FIFA 08: 1280x720p (AA 2x) - Xbox 360
Forza Motorsport 2: 1280x720p (MSAA 2x) - Xbox 360
Full Auto 2: 1920x1080p (AA 4x, bad framerate) - PS3
Gears of War: 960x720p - Xbox 360
GranTurismo HD: 1440x1080p - PS3
GRAW 2: 1280x720p - PS3
GRAW 2: 1280x720p (AA 2x) - Xbox 360
GT5 Prologue Demo:1280x1080p - PS3 (Show Room and the Pit/Garage is full 1920x1080)
Halo 3: 1152x640p - 360
Harry Potter: 1280x720p (MSAA 2x) - PS3
Heavenly Sword: 1280x720p (AA 4x) - PS3
Jericho Demo: 840x560p - PS3
Jericho Demo: 1280x720p - Xbox 360
LocoRoco Cocoreccho: 1920x1080p (MSAA 2x) -PS3
Marvel: Ultimate Alliance: 1920x1080p - PS3
MotorStorm: 1280x720p with (MS AA 2x) - PS3 (the AA effect is little decreased because hard contrast and bloom effect)
MX vs ATV: 1024x576p - PS3
MX vs ATV: 1280x720p - Xbox 360
NBA 07: 1920x1080p - PS3
NBA 08: 1920x1080p - PS3
NBA Street: 1920x1080p (AA 4x, 30-60fps) - Xbox 360
NCAA Football 08 Demo: 1024x600p (AA 2x) - PS3
NCAA Football 08 Demo: 1024x600p (AA 2x) - Xbox 360
NCAA Football 07 Demo: 1280x720p - PS3
NCAA Football 07 Demo: 1280x720p - Xbox 360
Need For Speed Pro Street: 1280x720p (AA) - PS3
Need For Speed Pro Street: 1280x720p (MSAA 4x) - Xbox 360
Ninja Gaiden Sigma: 1280x720p - PS3
Oblivion Elder Scrolls: 1280x720p - PS3
Oblivion Elder Scrolls: 1024x600p - Xbox 360
Perfect Dark Zero: 1140x640p - Xbox 360
Pirates of Caribbean: 960x720p - PS3
Pixel Junk Racers: 1920x1080p - PS3
Project Gotham Racing 3: 1024x600p - Xbox 360
Project Gotham Racing 4: 1280x720p (MSAA 2x) - Xbox 360
Resistance: 1280x720p (MSAA 2x) - PS3
Ridge Racer 6: 1440x810p - Xbox 360
Ridge Racer 7: 1920x1080p - PS3
Skate: 1536x864p - PS3
Skate: 1280x720p (AA) - Xbox 360
Super Rub a Dub: 1600x1080p - PS3
Super Stardust HD: 1280x1080p - PS3
Tekken 5 Dark Resurrection HD: 1920x1080p - PS3
The Darkness Demo: 1024x576p - PS3
Tomb Raider: 1024x600p (MSAA 2x) - Xbox 360
Tomb Raider: 1024x600p - Xbox 360
Tony Hawk Project 8: 1040x585p AA - Xbox 360
Tony Hawk Project 8: 1280x720p - PS3
Tony Hawk Proving Ground: 1024x600p - PS3
Tony Hawk Proving Ground: 1280x720p - Xbox 360
Transformers: 960x1080p - PS3
Uncharted: Drake's Fortune: 1280x720p (AA 2x) - PS3
Virtua Figher 5: 1024x1024p (AA) - Xbox 360
Virtua Figher 5: 1024x1024p - PS3 (native resolution for the 720p, but for 1080p output is 1024x768)
Virtua Tennis 3: 1920x1080p (AA 2x) - PS3
Virtua Tennis 3: 1920x1080p (AA 2x) - Xbox 360
PlayStation XMB: 1920x1080p
Xbox 360 Dashboard: 1280x720p
Hope you'd like the list i've gathered from the web.