Power To The People from Jimmy Misinformed on Vimeo.
On the Iranian.com online magazine (whose motto "nothing's sacred" should give you a sense of how unloved it must be by Iran's religious establishment) has a page with regular updates on the situation with the Iranian post-election protests. It included the BBC's Persian service video, above, which shows police being repelled and then chased by protesters. I fear that in the short- to medium-term, the security forces are going to prove bigger and better armed than the protesters, but it looks like the demonstrators have a healthy lack of affection for people who shoot unarmed pro-democracy protesters.
Other sources for updates: Huffington Post has an update page that is refreshed throughout the day with the latest news, rumors, and videos; so does the New York Times.