I saw a Sam Kinison show where I could not understand a single word he said all night long. At first we thought it was our seats so we moved but it was just bad.
If you recall he used to eat the microphone. In this case, he was just blew out the sound system and I guess they couldn't turn him down enough.
Andrew Dice Clay? I "got" it, but it didn't get me.
Richard Jeni is a weird story. He is kind of unknown but I guess he was very successful as a comedian, very highly paid (he could deliver night after night). He committed suicide a few years ago - had massive depression.