Greatest glitches in gaming history?

I don’t know that I’d call these collected glitches the greatest in history — what about sliding up the wall in Double Dragon, or butt-bumping up the long stairs in Mario 64? But they are impressive, and the Mortal Kombat video above is hilarious (explanation: if one player surrenders with a “hara kiri” move, the game gets mixed up and the fighter performs a fatality on himself). The S.T.A.L.K.E.R. video they’ve found actually turns into quite interesting abstract art at the end.

I’m a big fan of glitches in games (Time Attackers abuse them liberally), although I’m more familiar with the old school ones. Do you guys have any favorites? Find video if you can.