Recently, TED posted online a talk by Salman Khan. Not that Salman Khan. This is the Khan of Khan Academy. If you have not seen the site yet, now is the time. A friend brought the site to my notice and it has saved me a lot of time and effort in teaching a variety of classwork to Sujit. Thanks Anitha.
Talking of educational videos, here are some physics lectures. I haven't seen them all. They seem to be good.