I'm sure most, if not all of you have heard of OK Go by now, but they're still one of my favourite rock bands.  I came across them first a couple of years ago, when they released their first videos on Youtube.  They've got a great and unique sound, and you can't go wrong with their great homebrewed music videos.  Even the most recent, This Too Shall Pass is fun with the inclusion of ghillie-suited band members.