Best looking XBox 360 game? Worst?

[Supernova82]

I believe  BioShock looks the best game so far on the XBox 360.

Worst looking game on XBox 360 I would give that to Vampire Rain.

Please answer the thread title.

*Full XBox 360 games only that have been released.

**Edit: Does the best looking graphics game also have the best game play as well?