I particularly like his anecdote about Martin Scorsese's story-boarding skills:
Most directors are decent draughtsmen, Parker explains. It goes with the job, whether it involves storyboarding a movie or simply scribbling ideas down on the set. "On the other hand, a lot of directors can't draw at all. Steven Spielberg, for instance, cannot draw. He works from a storyboard drawn by someone else to his instruction. Whereas Scorsese does stickmen. There's an exhibit in the American Film Institute in a big glass case. The first square shows two stickmen standing up. The next square shows one stickman lying down. And that's the storyboard to Raging Bull." He cackles with mirth. "Whoa!" he says. "Go Marty!"