@hingehead,
I missed three. Does that make me, like, nine-tenths of a nerd with something vaguely resembling a life to fall back on?
Btw, here's another one to add to your list:
Rene Descartes walks into a bar and orders a drink. When he finishes it, the bartender asks, "Have another?" Descartes ponders this a moment, then says, "I think not." And -- pouf!! -- he disappears.
