A bit of historical correction here...
It was R.Crumb who did Mr. Natural, Flakey Foont, Mr.Whiteman, Despair Comics etc for Zap Comics. I don't think he was ever refferred to as "Robert" in any of his work.
Gilbert Shelton did The Fabulous Furry Freak Brothers which is where Fat Freddie's Cat came from.
Victor Moscosco was the surrealist who did the Peanut Man and all those spacey desert landscapes (plus the legendary panels on the L-Taraval streetcar.
Rick Griffin did the famous 2-sidded '69 issue cover with the charging eyeball weilding a sword (R.Crumb did the other side's cover), plus, Ruby The Dyke, The Checkered Demon, and many others. He started out as a cartoonist for Surfer Magazine with a strip called "Murph the Surph". He went from there to doing political cartoons and then the Zap comics.
It was an amazing time.
and Frank Zappa (in spite of occaisionaly lapsing into shockingly crude parody) is one of the greatest musical geniuses in American history.
just wanted to get the facts straight...