George Carlin did radio before going into comedy (and in comedy, was square before he was hip, and quite good at impressions too). I recall him saying something about the pride he took in running the board: you know, clean transitions, etc. As a radio man, I confess that on almost every one of my shows there is some sort of screw up: I forget which song I have cued up, or I announce one song and play another, or there is some awkward silence as I frantically cue something up...

Anyway, here's George Carlin on the Mike Douglas show from 1972.