Tom Paxton is a guest on the kids/comedy show "Knock On Wood" with Steve Charney and "Harry." Paxton will sing his original "Jennifer's Rabbit." Also featured will be Spike Jones, the old novelty hit "Jolly Green Giant" sung by The Royal Guardsman, John Forster, David Brenner and the Smother Brothers doing their classic "I Talk to the Trees." And of course Harry, Steve's dummy, will be tearing up the airwaves with his antics.