I don't know what is up with Google and web design today, but hot on the heels of the Android.com revamp comes... this.
I spent the first 5 minutes just hovering over the little colored lines, because the sound is just so cool. Each line plays a musical note; it feels like you're trying to call down the spaceship from "Close Encounters of the Third Kind."
If you can ever pry yourself away from the cool little mouse over noises, you can actually start using the website. It's the standard set of feature explanation videos, but the whole time you are building a song.