Nov 042011
via patrickjmt.com
I have obviously not gone through every video here, but for you Math teachers out there who would like to have some additional tutorials as a backup, this may be a very worthwhile site.
An EXTENSIVE list of topics, all about 5 minutes in length in Algebra, Arithmetic, Calculus, Differential Equations, Discrete Math, Linear Algebra, Probability and Statistics, Trigonometry, and a Miscellaneous category.
You should check it out!