"All you can do is laugh, or jump out a window."
Actually, I prefer a third course, which I started exercising at the end of the day...
Instead of standing around pissing my pants, crying, and sucking my thumb that my accounts lost in excess of five figures today, I dumped about $3,500 INTO the markets, into stocks which got caught up in the monkey panic, and which are otherwise fine, solid companies with a long track record of performance. If I had any more right now, I'd be putting more in the markets.
I made a lot of money after the last market crash, I figure I'll make a lot this time, too. I just have to wait until everyone stops pissing their pants, sucking their thumbs, and gets their heads out of their asses.