THURSDAY, APRIL 28

CBS (8 p.m. ET)

This is an animal-world tragedy, the seemingly inevitable extinction that faces the majestic Bengal tiger. Richard Widmark narrates color footage shot in the Himalayan foothills.

SATURDAY, APRIL 30

ABC (2-3:30 p.m. ET)

King and his unpredictable lobbers (Buddy Hackett, Neil Simon, Carl Reiner, among others) join such stars as Jimmy Connors and Ken Rosewall for pro-celeb doubles and more serious pros-only matches worth $250,000. It's live from Las Vegas with kibitzers Arthur Ashe and Pancho Gonzales trying to ace a few comments past Howard Cosell. (Finals Sunday, May 1 at 4 p.m. ET)

SUNDAY, MAY 1

NBC (8 p.m. ET)

An intriguing—if morbid—quiz that tests viewers' knowledge of survival techniques in auto crashes, home fires, earthquakes and flash floods. Tom Snyder, Kate Jackson, John Amos, Shana Alexander and former astronaut Wally Schirra officiate.

CBS (8 p.m. ET)

You can hardly believe the Texans will lose, what with John Wayne (Davy Crockett), Richard Widmark (Jim Bowie), Richard Boone (Sam Houston) and Laurence Harvey (Bill Travis) mowing Mexican soldiers down by the wagonload. Wayne also has a director's credit on this glorious spectacle.

PBS (9 p.m. ET)

In this final episode Hudson marries Mrs. Bridges and Georgina marries the Marquis of Stockbridge. Rose tours the empty rooms at Eaton Place, recalling some of the misadventures that earned seven Emmys in four years. A live cast party/ telethon follows with Alistair Cooke, Jean Marsh and Simon Williams.

TUESDAY, MAY 3

NBC (8 p.m. ET)

Jimmy Dean is Snooky Lanson à la Nashville in this top-20 countdown of country faves from Opryland U.S.A. Among the bushels of guest stars: Tammy Wynette, Freddy Fender, Don Williams, Crystal Gayle.