Wednesday, April 5 SID CAESAR, IMOGENE COCA, CARL REINER, HOWARD MORRIS SPECIAL (CBS, 8:30-9:30 p.m.).* Stars of the oldtimer "Your Show of Shows" come back to spoof rock 'n' roll groups, the Paris tourist and Italian opera. The Billy Williams Quartet comes with them.
THE ABC WEDNESDAY NIGHT MOVIE (ABC, 9-11 p.m.). Dean Martin, Susan Hayward and Martin Balsam engage in a political chess game for the governorship of California in 1961's Ada.
NBC NEWS INQUIRY: CROSSROADS IN SPACE (NBC, 10-11 p.m.). A detailed report on the origin, development and present status of NASA, including a sharp examination of the pros and cons of moving the manned space center from Cape Kennedy to Houston. Frank McGee interviews NASA's top administrators as well as critics of the space program.
Thursday, April 6 NBC STAGE 67 (ABC, 10-11 p.m.). Sidney Poitier is host of the Harry Belafonte production "A Time for Laughter," which flashes back through 100 years of bittersweet Negro humor. Comedy sketches and songs by Belafonte, Diahann Carroll, Dick Gregory, Redd Foxx, Godfrey Cambridge.
Friday, April 7 CBS FRIDAY NIGHT MOVIES (CBS, 9-11 p.m.). The Long Ships (1964), a period piece aswash with buckle. Sidney Poitier, leader of the Moors, and Richard Widmark, the Viking chief, clash in their search for lost treasures.
PORTRAIT OF WILLIE MAYS (ABC, 10-11 p.m.). The Giants' captain reminisces about last season's pressure-cooker finish and makes some predictions for 1967. Chris Schenkel narrates filmed moments of Mays at home and at play.
Saturday, April 8 ABC's WIDE WORLD OF SPORTS (ABC, 5-6:30 p.m.). Highlights from Sebring's twelve-hour Grand Prix of Endurance for sportscars, plus the A.A.U. Men's Indoor Swimming Championships in Dallas.
MASTERS GOLF TOURNAMENT (CBS, 5-6 p.m.). Action at 14th through the 18th holes, broadcast live from Georgia's famed Augusta National Golf Club, and continuing on Sunday from 4-5:30 p.m.
NATIONAL GEOGRAPHIC SOCIETY SPECIAL (CBS, 8:30-9:30 p.m.). Captain and Mrs. Irving Johnson con their 50-ft. ketch through the inland waterways of France, Denmark, The Netherlands, Germany and Belgium in "Yankee Sails Across Europe."
G.E. THEATER (NBC, 9-11 p.m.). A recreation of Broadway's musical hit of the '50s, Damn Yankees, starring Phil Silvers, Lee Remick, Ray Middleton, Jim Backus and Fran Allison.
Sunday, April 9 NBC EXPERIMENT IN TELEVISION (NBC, 4-5 p.m.). "The Questions," a stream-of-conscience play by John Hawkes that centers on a woman's choice of coming to grips with reality or facing emotional oblivion. Fritz Weaver and Verna Bloom are featured.
THE 215T CENTURY (CBS, 6-6:30 p.m.). In "Autos, Autos Everywhere," Walter Cronkite drives the cars of the future, and Professor Dwight Bauman of M.I.T. discusses some far-out plans for fully automated highways.
BELL TELEPHONE HOUR (NBC, 6:30-7:30 p.m.). "The Sounds and Sights of New Orleans," featuring Trumpeter Al Hirt and Pete Fountain with his clarinet; the jazz museum with its own living legend, Guitarist Danny Barker; and the inevitable Young Tuxedo Brass Band on the way to the cemetery.