I came across this sweet music video by the band, OK Go. A few things came to mind while I was watching it:
1. Mousetrap (that game lasts like a week before you start loosing pieces)
2. I didn't pay close enough attention in physics class
3. How many takes did this require before they got it right? Judging by the amount of paint on them, a few, but not too many. Again, amazing.
4. Kudos to the camera operator!