A video of Honeycomb's new "Holographic" UI: http://www.youtube.com/watch?v=hPUGNCIozp0

Not sure yet how well that theme will go over. When the Sense UI came out it was certainly more flashy and pretty than the stock UI, but at a major cost to battery life. Hopefully holographic has mitigated some of this.

It'll be interesting to see their UI builder in action once they finalize it. One of the larger gripes I've heard from iOS developers turned android is the lack of decent/fast UI construction tools.