Paul Sand guests on Taxi (Tuesday at...

Paul Sand guests on Taxi (Tuesday at 11 p.m. on Nickelodeon) as an eccentric artist.

Wes Callison (Jerry Van Dyke) returns to WJM and falls for Mary on The Mary Tyler Moore Show (Tuesday at 11:30 p.m. on Nickelodeon).

Playwright Bernard Slade (“Same Time, Next Year”) penned the “That Was My Wife” episode of Bewitched (Wednesday at 10 p.m. on Nickelodeon).

Ed Asner plays an aging cop who is forced to train a headstrong rookie in Police Story (Thursday at 9 a.m. on A&E;).

Patrick McGoohan won an Emmy for his terrific turn as a commander of a military school who commits murder to stop the school from being turned into a co-ed college on Columbo (Thursday at 11 a.m. on A&E;).

TNT dusts off an episode of the 1967-68 NBC adventure series Maya (Friday at 2 a.m.), starring Jay North and Sajid Khan.

James Farentino and Bruce Davison guest on Police Story (Friday at 9 a.m. on A&E;) in a thriller about how a series of prostitute murders gives a cop a chance to switch from vice to homicide.

John Astin guests on Welcome Back, Kotter (Friday at 8:30 p.m. on Nickelodeon) in an episode in which the Sweathogs become locked in a tomb with a mummy during a museum field trip.

Karl Boehm plays composer Ludwig von Beethoven in the 1961 Disney film The Magnificent Rebel (Saturday at 3:30 p.m. on the Disney Channel).