Someone has put together a 3D File System Visualizer using Avalon. Whilst this shows the power of the technologies used, it is as Mike says:
exactly the sort of horrid user interface that I fear Avalon is going to enable developers to saddle us with
I hate apps that tout skinning or theming as a significant feature, and I’m worried that if Avalon makes it easy to do 3D interfaces, then they will become a new pet hate of mine (and others).
To quote Uncle Ben1:
With great power comes great responsibility
…or to put it another way, just because you can (do fancy 3D interfaces/representations) doesn’t mean you should.
1 Not the one who makes rice