Clifford Pickover is a scientist and prolific author. He's written a bunch of books about fractal art, math, strange science, and logic. He started a group on Yahoo and there are some good discussions going on there. Link Discuss
Mark Frauenfelder is the founder of Boing Boing and the editor-in-chief of MAKE and Cool Tools. Twitter: @frauenfelder. Come and hear Mark speak at the ALA conference in Chicago on July 1.