Singer Phil Harris (“The Thing”) plays 147-year-old...

Singer Phil Harris (“The Thing”) plays 147-year-old Chief Flaming Arrow, who decides to capture Fort Courage and win back the United States on “F Troop” (Monday at 8 p.m. on Nickelodeon).

A pre-Pee-Wee Herman Paul Reubens guests on “Mork & Mindy” (Monday at midnight on Nickelodeon) in an episode in which Mork travels back in time to Mindy’s senior prom to see if she would have loved him instead of her high school sweetheart.

Floyd the barber (Howard McNear) makes his first appearance on “The Andy Griffith Show” (Tuesday at 3:35 p.m on TBS).

Cloris Leachman guests on “Alfred Hitchcock Presents” (Tuesday at 10:30 p.m. on Nickelodeon) in an episode in which a couple traveling with their young son on a train learns there’s an escaped mental patient on the loose.

A Count (Vincent Price) from Transylvania visits Fort Courage and all the soldiers think he’s a vampire on “F Troop” (Wednesday at 8 p.m. on Nickelodeon).

Harry James blows his own horn when he guests as himself on “The Donna Reed Show” (Thursday at 1:30 a.m. on Nickelodeon).

After Ricky makes fun of Lucy’s new hat, she puts on the loving cup he is to present to jockey Johnny Longden at the National Turf Assn., and in typical Lucy fashion, she can’t get it off on “I Love Lucy” (Thursday at 3:05 a.m. on TBS).

The Waltons must pull together to help Olivia battle polio in an Easter episode of the award-winning “The Waltons” (Friday at 7 p.m. on The Family Channel).

The late John Cassavettes guests on “Alfred Hitchcock Presents” (Friday at 10:30 p.m. on Nickelodeon) as a dangerous escaped criminal who holds a woman hostage while preparing to take flight.

The unforgettable Nat King Cole welcomes Gogi Grant of “The Wayward Wind” fame to “The Nat King Cole Show” (Saturday at 9 p.m. on KOCE).

Perry White is accused of embezzlement and arson when the Daily Planet’s newsprint warehouse has a fire and the payroll disappears on “The Adventures of Superman” (Saturday at 10 p.m. on Nickelodeon).

Walter Matthau and Richard Kiley guest on “Alfred Hitchcock Presents” (Saturday at 11:30 p.m. on Nickelodeon) in a story about a couple who are stopped by the police for speeding even though they were driving under the speed limit.

Hey! Hey! Baby boomers set your VCRs for an episode of “The Monkees” (next Sunday at 5 a.m. on KTLA). It’s hard to believe that Peter Tork, Davy Jones, Mike Nesmith and Mickey Dolenz hit the airwaves nearly 26 years ago on NBC and won the 1966 emmy.