Sorry not related to trading, but none the less, great interview with Jim Simons of Renaissance Technologies. For a man who is generally secretive and likes to avoid the press, this is a lengthier piece (1 hour) for those curious.
http://www.marketfolly.com/2009/07/jim-simons-rentec-interview.html
http://www.marketfolly.com/2009/07/jim-simons-rentec-interview.html