Quite interesting biographical interview with Professor Tribe here.  A very funny bit about his time clerking on the Supreme Court:

We used to go to the basement of the court to watch porno flicks because the court was in a phase where it would just have to judge — thumbs up or thumbs down — either this is hardcore pornography and can be banned, or it’s not. They had no criteria. They just basically looked at the movies. Harlan was going blind, and so he had Thurgood Marshall narrate the films. “Oh, he’s doing that? You’ve got to be kidding!” That was the screening process.