why go a long way back! we have a much more recent one and this is nothing compared to that. i can't remember when exactly this was but you can probably find the topics of it. basically some whale(s) went mad then in less than 10 minutes they cleared the orderbooks up and down. i believe it was @$1100ish price when price dumped down to $975 then jumped up to $1350 (March 10). it was pretty funny to see.