Drag Racing is pretty good - still addicted to it.
Thanks for this list, it's a great resource! Here are a couple of great-looking games that for some reason don't seem to be available on the Android market ... I got them from the Amazon Appstore:
Plants vs. Zombies
I'm also looking forward to the general Android release of Minecraft Pocket Edition, which is due any day now. Currently it only works with the Xperia Play.
Air Attack HD is another great-looking game that works with the Bionic.