More sweeps tactics are on display on CBS, while cable's Discovery Channel takes a sweeping look at the dramatic U.S. evacuation of Saigon, which occurred 20 years ago today.
* "Diagnosis Murder" (8 p.m.-9 p.m., WJZ, Channel 13) -- Sweeps ploy #1: The network's nighttime series aren't doing so hot but "The Young and the Restless" is number one among daytime soaps. Thus, members of that cast do a night shift in this show, including Eric Braeden, Lauralee Bell, Melody Thomas Scott and Doug Davidson. To set up Dr. Sloan's (Dick Van Dyke) appearance on the set, regular Amanda (Victoria Rowell, a former "Restless" player) wins a walk-on role and learns that murder is afoot. CBS.
* "VR.5" (8 p.m.-9 p.m., WBFF, Channel 45) -- Sydney (Lori Singer) finds virtual reality is the only way to save seven air traffic controllers held hostage by a former controller who believes he was wrongfully blamed for a fatal crash. Fox.
* "Burke's Law" (9 p.m.-10 p.m., WJZ, Channel 13) -- Sweeps ploy #2: Count the cameos! While Amos Burke (Gene Barry) tries to evade an ancient curse attached to an ancient sculpture, he encounters some personalities of TV and movies past, including Loni Anderson, Cyd Charisse, Dom DeLuise, Margot Kidder and Doug McClure. CBS.
* "The X-Files" (9 p.m.-10 p.m., WBFF, Channel 45) -- A deadly sickness is unleashed at a prison and carried outside by a pair of escapees. Mulder and Scully (David Duchovny and Gillian Anderson) are called into the case. Fox.
* "Homicide" (10 p.m.-11 p.m., WBAL, Channel 11) -- In an episode that owes something to a real-life 1992 incident in Louisiana, when a Japanese exchange student was shot to death when he knocked on the wrong door, Bayliss (Kyle Secor) confronts a conflict when his cousin (guest David Morse) is charged with a similar crime. NBC.
* "Through the Eyes of Forrest Gump" (8 p.m.-8:30 p.m., VH1) -- This half-hour special on the making of the hit movie anchors day-long attention to the film on the video network. Why today? Because the movie's coming out on cassette, of course.
* "The Fall of Saigon" (9 p.m.-11 p.m., The Discovery Channel) -- An original production by the Maryland-based cable network looks back 20 years, to the day the U.S. withdrew from the Vietnamese capital in the face of advancing North Vietnamese troops. They called it Operation Frequent Wind, and numerous survivors tell their stories.