Ask an Astronomer
**http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ask_astronomer/video/index.html**
Delightful video podcasts for use with students. Topics range from the movement of stars to the status of Pluto to black holes. Each video is done by a NASA scientist and provides excellent information. The videos can be downloaded in various formats for use b educators and students.

Why? The Science Show for Kids Podcast
http://www.youthscienceforum.ca/view.php?id=17
Check out interesting options done by a professor in Canada. Topics range from "Why do you have 5 fingers?" to "What Happened to the Dinosaurs?" to "Why Isn't Greeland a Continent?" Well done for use with students.

Ecogeeks
http://www.thewildclassroom.com/home/nav/pastvideos.html
Superb video podcast for helping teach biology. Check out the podcast on the "Most Deadliest Snake." Uee Itunes to subscribe for ease of access and download options.