I remember seeing him on Crossfire in the mid-80s trying to convince Novak that he was a conservative, but I don't think Bob was buying it.
I was just listening to the London Symphony Orchestra CD, its great, but the liner notes where he rips inot the unionized musicians and their obligatory breaks where they went and got drunk were great.
If you go to zappa.com, they run continuous music over your speakers, its cool.