I made a thread about it but apparently no one saw it, but
Echochrome looks like it's going to be awesome.
The Japanese demo is downloadable for the PSP now, if you guys have one. I played through it and think it's just a brilliant concept. I'm so buying it the moment it comes out. You'll have to pull it up in your PSP (obviously) but the URL for the download is:
http://www.pspdemocenter.org/page.php?id=906
