Nice lec-dem on the basics of CM by Chakravarthy sisters:
Part 1 - http://www.youtube.com/watch?v=r1eUUUYQX0Q
Part 2 - http://www.youtube.com/watch?v=_aa5atLMWFU
What I liked especially was their effective use of slides to explain the key points.
Has anyone heard (of) these artistes?