Good Eats Fan Page
This lists both scientific and nonscientific themes covered in the episodes. Handy if you want to find an episode that covers a topic you'd like to use to enhance your classroom lesson.
Editor's Note: The link to this site may change. If the link is dead, please report it to me, and I'll try to fix it.
Note 2: Still not getting paid by anyone for mentioning the site. :)