The band is called OK Go, and the song is called "Here It Goes Again".
This may be the coolest video I've seen in a long time, and perhaps ever. I may go get the album based on the video alone. The music, it isn't too bad either. Check it out.
Doesn't You Tube rock? I love it. If I ever miss anything, and people are talking about it, you can find it on You Tube or google video. Love this website.