This is what I've got on my phone:
3D:
ilomilo
Mirror's Edge
Crimson Dragon: Side Story
Unfortunately, I've yet to see a 3D game running at 1280x768. I don't even think most of those games are running at 800x480. Hydro Thunder does a good job of making the phone run hot, but it's one of the lower resolution games I've seen out there. Kinectimals is probably one of the more impressive 3D games out there, to be honest. But both Mirror's Edge and Crimson Dragon are pretty good.
2D:
Little Acorns
Mush
MonsterUp
I think the 2D gmaes are more visually pleasing when you find one that runs at higher resolutions. Mush is probably being the most impressive of the three, at least from an artistic standpoint. Although, some of it's gesture based functionality in the later stages gets a bit tiresome and it makes for an easy way to drop your phone.