Nouriel Roubini is one economist everyone should be listening to, listen and make your own judgments of course. He is a professor of econ at NYU and is known as Dr. Doom and predicted the credit crisis many months ago, in fact as early as 2006. Check out his wikipedia: http://en.wikipedia.org/wiki/Roubini and his blog: http://www.rgemonitor.com/index.php.
Fortune magazine has a series of 8 gloomy predictions from various experts for 2009, including Roubini: 8 really, really scary predictions for 2009.