There's a great RSA video/talk about motivation. It turns out that money (or other extrinsic rewards) only work for rote, physical labor. For cognitive tasks, motivation must come from within. In fact, rewarding cognitive tasks had the opposite effect.

As a teacher, I'm torn. While I'd love to get more pay, I'd much rather see the worst teachers removed.

http://www.youtube.com/watch?v=u6XAPnuFjJc

I've got a speck in my eye.

That big thing came out of that little thing? How did it fit?

Link is broken?

You can tell it's fake because guys would have been making swirly patterns and writing words.