Frank Zappa was way more than the vulgar wildman persona he projected. He was quite literally a genius. He was a master of his instrument and he orchestrally scored all the parts in some of the most amazing music I have ever heard. His songs were full of biting social and political satire and his skewering of Tipper Gore and the congressional subcommittee on lyrics in music in the 70's was something to behold. There was an only partially tongue in cheek "Frank Zappa for President" movement during the 1980 election season. I really miss his sarcastic, cynical, and penetratingly astute observations on American culture; he would have had a field day with today's political scene.
I don't know if he was a diver or not. ;^)