Just found this and so far it seems pretty decent. It's a 5 part series with some videos split into A and B sections.
Goes over exploitation of programs in Perl, Ruby, Python, and C/C++. From what I've seen it looks like it is alot of C though. I could be incorrect.
Here ya go:
http://www.youtube.com/watch?v=NzGB-8SntqcHope that it is as good as I am seeing so far.
Edit: He seems to assume that you have some of previous knowledge on processors and debuggers. Not for complete newbies.