There was some discussion about the "cone of silence". It is mentioned in Get Smart (here's another link). It was also mentioned in Dune as someone suggested, though I have never read the it. I must be honest and say that if you had asked me I would have said it was in Woody Allen's Bananas or perhpas Barabarella, but I certainly watched Get Smart so that's probably where I got it.
I think Barabarella had the Orgasmotron or somesuch...
Chris Kuan