Guests: --Fifth Dimension - ""Up Up & Away,"" ""Working on a Groovy Thing"" and ""Aquarius""/""Let the Sun Shine In"" --Liza Minnelli - ""You Made Me So Very Happy,"" ""Didn't We?"" (and possibly ""MacArthur Park"") --George Carlin (comedian) - ""The Big 3 News"" sketch with Carlin as a news reporter, commercial announcer and ""Al Sleet"" (the Hippy Dippy Weatherman) --Audience bow: Jacqueline Susann --Joan Rivers --Bill Dana (comedian, as Jose Jimenez) - Ed appears in act, asking Bill questions. --The U. S. Military Academy Glee Club --Vino Venito (sword balancer from ""Circus, Circus"" in Las Vegas) - balances candelabra. (thetvdb.com)