Resident Evil 5 Demo, Japan Only Demo, Now Brought To The US
You DON'T need a modded/flashed Xbox to play!
Directions:
Unrar
Burn the Content folder to a blank CD (Even the Windows CD burner works here!)
Put in your 360 (Yes, it sees it as "Mixed Media")
Go browse your Demos, and sure enough, its there! It has a Japanese name, but the language depends on the one your 360 is set to (I think)
Have fun!