For me Dick Cavett’s Watergate, which aired on PBS stations last August, was a delicious if too-short summary of all those great ABC Dick Cavett shows that focused on the Watergate scandal between mid ’72 and August ’74. Today director John Scheinfeld informed me that a similar compilation will air in April — Dick Cavett’s Vietnam. Cavett’s show was the only mainstream show that chewed the Vietnam War fat with politicians, journalists, newsmakers and celebrities — John Kerry, Henry Kissinger, Daniel Ellsberg, Muhammad Ali, Woody Allen, Warren Beatty, Jane Fonda, Barry Goldwater, Billy Graham, Alexander Haig, David Halberstam, Senator Wayne Morse, Paul Newman, I.F. Stone, etc.