Confused by Chemistry? Frazzled by Physics? Do you just need a visual means of grasping those pesky chemistry concepts? Then do I have the site for you...
Dr. Carlson's Science Theater.
Dr. Carlson's Science Theater is a "video podcast of cool science demonstrations. Join Dr. Matt Carlson as he risks life, limb, and dignity to bring you the finest science videos on Earth."
You can watch the videos by clicking on the link on Dr. Carlson's blog, or by subscribing via iTunes.
Hat Tip: Lifehack.org