Okay, so yes, this is a commercial for Android, but it pretty darn amazing. I saw another projection mapping project about a year ago in NYC as part of the Vimeo Awards at the IAC center, and was blown away by that too.
Imagine a "festival" where a city had a multiple of these set up, all with a bit of an interlocking story to them. If I was opening a building, a museum show, or having some sort of city-wide event, I would want to have something like this as part of it.
(Thanks to Gary Meyer for the tip!)