Sagan's Cosmos Series Online on Hulu

Here is a good resource for teachers, from Bad Astronomy.

Hulu is carrying the entire popular and highly acclaimed Public Broadcasting Service series Cosmos. First broadcast in 1980, Cosmos won an Emmy and a Peabody Award, and popularized astronomy to more than 600 million people in 60 countries. The series made its narrator, astronomer Carl Sagan, a household name.