Ricky sings the lyrics to the “I...

Ricky sings the lyrics to the “I Love Lucy” theme song for the one and only time, as he celebrates Lucy’s birthday on I Love Lucy (Sunday at 5 p.m. on KTTV).

Bruce Dern guests on The Fugitive (Monday at 2 p.m. on A&E;) in an episode in which Lt. Gerard receives a “death sentence” and only Kimble can save him.

Bobby is given a kiss by the young girl (Melissa Anderson of “Little House on the Prairie”) he defends at his school, only to discover she has the mumps on The Brady Bunch (Monday at 1:35 p.m. on TBS)

Long before he was guest-hosting on “The Tonight Show,” Jay Leno pops up on Good Times (Monday at 2:05 p.m. on TBS) in an episode in which J.J. learns his old girlfriend has a venereal disease.

Louis Gossett Jr. plays an old navy buddy of George’s who comes to visit and falls for Louise on The Jeffersons (Monday at 2:35 p.m. on TBS).

A pre--”My Favorite Martian” Bill Bixby plays a wealthy young man to whom Andy teaches self-reliance on The Andy Griffith Show (Monday at 3:35 p.m. on TBS).

After “Bosom Buddies” was canceled in 1982, Tom Hanks guested on Happy Days (Monday at 4:05 p.m. on TBS) as Dwayne Twitchell, a karate-chopping former crybaby who holds a grudge against Fonzie and seeks to revenge a childhood wrong at a ceremony honoring the Fonz as a new model citizen.

Fred Sanford gets a chance to meet his idol, Lena Horne, when he spots her car in the parking lot while touring the NBC Studios and decides to sneak away from the tour to find her on Sanford & Son (Monday at 4:35 p.m. on TBS).

Award-winning actress Shirley Knight, Hope’s mom on “thirtysomething,” guests on Spenser for Hire (Tuesday at 11:30 a.m. on Lifetime) as the wife of Lt. Quirk (Richard Jaeckel) who begs Spenser and Hawk to stop a vicious ex-con after her husband.

The great character actor Robert Webber, who died of Lou Gehrig’s disease two years ago, shines as Maddie’s loving father on Moonlighting (Tuesday at 2 p.m. on Lifetime) in an episode in which he confronts David about his plans for Maddie and her baby.

Listen closesly as Lucille Ball makes a rare flub on I Love Lucy (Wednesday at 11 p.m. on KTTV) when she says, “Let’s paint the furniture and reupholster the old furniture” instead of “Let’s paint the apartment and reupholster the old furniture.”

David’s desire to learn about fatherhood causes him to enroll in a Lamaze class where he becomes the partner of a single woman (Brooke Adams) on Moonlighting (Thursday at 2 p.m. on Lifetime).

Ricky reads “Little Red Riding Hood” to Little Ricky in Spanish on I Love Lucy (Saturday at 5:30 p.m. on KTTV).