Today was pretty wild, but if you want to see wild, take a trip down memory lane to the NASDAQ on April 4, 2000, when the market was at one point down 14% before snapping back to nearly even. The wild action is highlighted in yellow.

On that day the NASDAQ opened at 4283, hit 3649 at mid-day, and closed at 4148.

And then what? A week later the market was back at those depressed levels.

Click the chart to enlarge.