So many. Some don’t hold up entirely but ones I didn’t see yet:
Neil Diamond Storytellers—this one is hard to find prob due to clearing the music and/or offending Neil Diamond
Sofa King!
Tony Ruins Puppet class (this has both South Park and Family Guy folks together which is also neat)
The All-Drug Olympics
There are more of course. You bet your finger there are!
Special mention goes to “Superman’s funeral” and Robert Smigel as the Penguin (‘this is how I cry!’)
Also, some episodes were gold mines. While William Shatner lashing out at Star Trek fans is a classic (“you there! Have you ever kissed a girl? I didn’t think so!”), I also liked the Star Trek Restaurant one later that show. Don’t make me regret my free food for the crew policy!