If you watch all of his vids (including the cam ones you'd have had to download from KaZaA, back in the day), chronologically, in one sitting: you can actually see as he develops his jokes, and makes them better. It's really neat. I especially loved the one where he literally berates the audience for his entire set; he created a few routines on that one. It was actually one of my first wake-up calls to the testament of hard work.