This is just absolutely full of win.
It's only 3:32 long, trust me, you can spare 3 minutes. I dare you to watch this without smiling. Go ahead, I'll bet you can't.
UPDATE** - I just watched this for like the 9th time, I just noticed this - Watch when the bass line comes in (at about :41), the camera focuses in on what must be the only black person in the audience. WTF??? Are you kidding me?
Also, make sure you watch it all, the vocals are the best part!