You'd be buying gold at the top of that market. If you're into investing, best to buy on the way down, and wait for the rebound. That means opportunities in foreclosures, or depressed health care, energy, or solid tech.
Most of all, I'd encourage you to not panic. Remember, up until relatively recently, stocks were meant to be held for years or decades, and day trading was limited to full time investing professionals, which most of us are not. We've had other financial crises before ('29, '46, early 60s, '74, '80, '87, '92, '01, to name a few), and they all worked themselves out. And every time, somebody said "this one is different, I don't think the economy will recover from this one."
Also, keep in mind few if any people make money buying high, which is what the story had been for several years. People were just seeking means to artificially keep the credit and housing bubbles inflated, and time has run out. Fine, let it happen and allow the suckers to do panic sells. You don't have a "loss" until you sell. Meanwhile, sit tight and let all of this work itself out. There is, after all, an incentive as wall street's own money is on the line now.
Personally, I'm looking forward to refinancing a few properties after the rate cuts make their way to the mortgage market.