Riptide GP is one of the best looking games available on Android right now. The GFX (especially water appearance) and gameplay are some of the best. I would say Android gaming is finally making some noise with games like this. The unfortunate thing is that it's a tegra zone product, so only out for phones/tablets with nvidia's tegra 2 processor. Let's hope these Tegra only games become available for other powerful phones with dual-core processors (evo 3d, sensation 4g, etc) down the line.
Gameplay Video:
http://www.youtube.com/watch?v=TDW9rJ3OkpA
Screenshot:
via