The talks from Skepticon IV are being posted to YouTube. 

So far we have:

• Richard Carrier on Bayes (my favorite)
• Julia Galef on the Straw Vulcan 
• Greta Christina on angry atheists
• Hermant Mehta on math education
• David Fitzgerald on Mormonism
• J.T. Eberhard on mental illness (a dramatic end to the conference)
• an "atheist revival" by Sam Singleton (on the lighter side)

ADDED:

• "Death Panel" featuring Julia Galef, Eliezer Yudkowsky, Greta Christina, and James Croft
• Darrel Ray on secularism and sex
• Eliezer Yudkowsky on heuristics and biases (really more like a crash course in the core LW sequences)
• Joe Nickell on paranormal investigations (I missed this at the conference; and even more regrettably, missed the chance to ask Joe Nickell what he thinks of many-worlds.)
• Jen McCreight on "skeptical genetics" (the other talk I missed)
• Rebecca Watson on the religious right
• Spencer Greenberg on self-skepticism
• Dan Barker on atheist clergy

More to come soon, hopefully...