Back in 2006 while working at the Drexel Learning Center (DLC) as a calculus tutor, I began making short instructional videos. These videos were posted on the DLC website (since revamped, with the videos removed for some reason) where student could access them for extra practice on fundamental topics in calculus. I soon became busy with my own coursework, and no longer had time to produce addition videos. However, if you like them, be sure to check out the Khan Academy 
(also launch in 2006) which has over 4,000 videos in a similar format.
