The story behind the Mel Brooks-Carl Reiner "2000 Year Old Man" comedy routine includes a 2009 talk with the two about the genesis of the bit; clips from TV appearances and the 1975 animated TV special it inspired; and remarks from fellow comedians Bob Newhart, Paul Reiser, Garry Shandling, Richard Lewis; "Get Smart" executive producer Leonard Stern; and Rabbi David Wolpe.