> I used to go see Carlin perform every August in Vegas. He was almost always working on new stuff and carrying a clipboard around with various jokes. It was really interesting to then watch his specials and see how the material developed.

Was this in his early days, or his darker rant days?

Even in his darker period he was still a crafty orator, using rhyming, cadence and tonality so well.

He discusses this in many interviews over the years and many which were shown in is documentary. What's even crazier to think is that he was kind of a recluse and an introverted person, which is insane considering how much of a wildman he was for most of his career.