Recently Ian Goldberg and I wrote an article for Dr. Dobb's Journal entitled Randomness and the Netscape Browser.
We built a list of online resources for generating crypto-strength randomness, as promised in the article. See http://www.cs.berkeley.edu/~daw/rnd/.
An accompanying page lists some side information about our attack on the Netscape browser, which temporarily thrust us in the media limelight. Another related page lists information about other attacks.