+1 I was ripping a door trim once using an ill advised technique and the trim was jettisoned from the saw and impaled the wall behind me.
Thankfully I was off to the side and no harm was done except for a hole in my garage wall. I have been anally careful ever since as table saws now scare the crap out of me. I much prefer to use my compound miter saw whenever possible.
Edit - actually should have posted this in the 'stupidest thing you've done' thread that we had going a while back.