I'll second the Flanders & Swann and Tom Lehrer and add a lot of stuff from Ray Stevens. I think my favorite is "The Day I Taught Charlene McKenzie How To Drive," followed closely by "The Pirate Song," but there are dozens of others.

Also Joel Mabus's "The Preacher and the Flood."

The Chad Mitchell Trio's versions of "Sigmund Freud" and "The John Birch Society" are still good for a chuckle.

And a lot of the Smothers Brothers' stuff still holds up.

david