Klein is the author of The Amorous Busboy of Decatur Avenue: A Child of the Fifties Looks Back, an autobiography published in 2006.
September 2007, released a new DVD compilation of his eight live HBO specials titled "Robert Klein: The HBO specials 1975-2005."
Mind Over Matter, his next album, included extensive discussion of the Watergate scandal and another song, the title track, about a kid who turned to humor to become popular.