James Randi, Aronra and DPjones on secularism, magic and fraud.

James Randi rocks, period. His work debunking mysticism and fraud is world renown. Anonra is a growing personality on youtube on atheism. I highly suggest his videos. DPRjones, arranges a yearly charity event for doctors without borders. DPRjones always has a bi-weekly internet show on atheism. All three are worth seeking out and listening to.