Why not the Feynman lectures?
Okay, this is truly funny. From
Not Even Wrong, Princeton professors stage "
filibuster" against the anti-filibuster machinations of alumus Bill Frist. Two of the filibusterers are physicists Chiara Nappi and Ed Witten, the latter of whom regaled the crowd by reading selections from Griffith's
Introduction to Elementary Particles. Couldn't he have just given an introductory lecture on twistors and string theory?