Jon Bentley [1] had a whole chapter in More Programming Pearls: Confessions of a Coder [2], called Bumper-Sticker Computer Science, which was of this sort. There seems to be a copy of it online [3].

[1] http://en.wikipedia.org/wiki/Jon_Bentley

[2] http://www.amazon.com/More-Programming-Pearls-Confessions-Co...

[3] http://quotes.cat-v.org/programming/bumper-sticker-computer-...