Alen Robin, a comic with a droll, very nasal voice, took the Buchanan & Goodman "Flying Saucer" concept - intercutting found recordings with original comedy - and applied it to political speeches. His "Welcome To The LBJ Ranch" hit the top of the pops in the mid '60s, and can be found in approximately 84% of American thrift-stores.
This album continues the concept into the '70s, with American politicos Nixon, Humphrey, Rockefeller, McGovern, Agnew, Kennedy and Lindsay finding their voices ripped out of their original context, now making various bizarre and neurotic statements to Robin, playing their psychiatrist. It's still quite funny and clever, even if you don't know much about the speakers. Even more impressive: it's recorded live. Not sure how he did it in the days before laptop samplers. Maybe he had all the voices, and pauses allowing for him to speak, pre-recorded on a long tape (this album's a little over a half-hour long). If so, his timing's amazing.
Alen Robin "Naked, Really Naked"