NEW YORK (Fortune.com) - FORTUNE's 100 fastest growers prove there is still life in the fast lane. Even in these rough times, the 100 companies on Fortune's fourth-annual list are experiencing rapid growth. (see the full list at Fortune.com)

Of course, in this environment surging sales and profits are more likely to inspire skepticism than adulation; investors are rightly wrestling with how much growth is real and how much is due to dodgy accounting. But during the past three years, shares of 92 of the companies on Fortune's list beat the S&P 500. (Is growth a good indicator of future share-price performance? Take the poll.)

Below is a list of the top five -- click on any company name to link straight to a Fortune profile.

Fortune: America's Fastest Growing Companies These are the top five movers based on 3-year history. Company  Revenue Growth  Earnings Growth  Total Return  Nvidia   104%  189%  53%  Dynacq International  59%  115%  115%  P.F. Chang's China Bistro  60%  166%  43%  Frontier Oil   104%  109%  38%  XTO Energy   53%  117%  46%   Source:  Zacks Investment Research

Also see the FORTUNE Exclusive: The Greedy Bunch. You Bought. They Sold. Since 1999, hundreds of greedy executives at America's worst-performing companies have sold $66 billion worth of stock. Is the company you work for on FORTUNE's list?