Gilbert Strang
I’ve been a big fan of Gilbert Strang, MIT professor, after buying his math book, Linear algebra and its applications.
You can see his video lectures on elementrary linear algebra course on MIT’s open courseware site.
http://ocw.mit.edu/OcwWeb/Mathematics/18-06Spring-2005/CourseHome/
I haven’t had the chance to watch all of them yet, but Dr. Strang’s lectures on the OCW are pretty darn good.
He’s a bit of a slow speaker though, and so you may want to look into “Learning Faster using VLC,” where a fellow describes how to get VLC to play videos 1.5x or 2x faster while keeping the audio understandable: http://sites.google.com/site/variablespeedlectures/
Thanks:)