Dave's Richard Dawkins resource page. Pretty much everything I know of by Dawkins that's been captured to video can be found here. A fantastic collection. Link.

Atheist Nation. Good forums and a huge collection of videos from various sources, most about religion but with some good skeptical and political videos as well. Link. (May be down for a few days due to server relocation)

Pat Condell. A vehement Anti-Theist I'll admit that while he does take a skeptical approach, the main reason I like him is because of is acerbic wit and brutal take on the uselessness of religion in the modern age. If you are religious you may not enjoy watching these videos, but I still suggest you hear him out. Link.