I haven't read this whole thing, but my all-time favorites are Farley skits... The motivational speaker one was great, and "Da Bears" skits were always funny. "More Cowbell" was good, I love Celebrity Jeopardy, The Continental was always a fave, and any skit that involves Darrell Hammond playing Clinton was funny. He does a fantastic Bill Clinton.
I also had a soft spot for the one with Jimmy Fallon and Horatio where they did the show on the web from their dorm room. Horatio was a great stoner.