Most Memorable Mistake? (Score 3, Interesting)

A few weeks ago, while trying my hand at french pastry-making, I nearly set fire to my oven as an overflowing tray of oil and melted butter (don't ask) splashed all over the red hot elements, generated copious amounts of acrid smoke, and threatened to ignite. I'm sure that with as much cooking experience as you have, you've seen many hilarious kitchen accidents.

What are the most memorable accidents, or acts of blatant stupidity, that you've seen or taken part in during cooking?