(If you don't remember, read the previous post, lazy-bones!)
In looking for a graphic of a falling piano on google images, I found these little jewels:
Apparently pianos and rhinoceroses are commonly confused with each other! I WIN!
Also, there's THIS. If someone could explain it to me, I'd really appreciate it. You don't have to explain the whole energy-conversion thing -- just explain why this video exists. Thanks!