Podcasting

I came across Bookwink book talks before, but I can't remember when or how. Bookwink does a good job at giving booktalks for students. I like the exaggerated expression of the presenter, she must enjoy what she does.
http://www.podfeed.net/podcast/Bookwink+video+booktalks+for+kids/10030

I teach Math 7 and am always looking for tutorials and helps for students who struggle with concepts. There are many podcast that have been developed on the behalf of those students who are struggling with a concept. There is also a feature that allows me to make my own podcast. i think that I will work on a few this Summer when I have free time.