Professor
Walter H.G. Lewin is quite famous for his lectures on physics at MIT. Professor Lewin is heavily involved in studying x-ray sources. He brings astrophysics into his lecture when ever possible. The three lecture series is open source and includes:
In lecture one, he shows the class the film
Power of 10 with Philip Morrison, but it does not show up in the video due to copyright issues, but is available on the web (follow the link). An updated
interactive version is also available.