Hoofer Donald O’Connor guests on The Adventures...

Hoofer Donald O’Connor guests on The Adventures of Ellery Queen (Monday at 11 a.m. on A&E;) in an episode that finds Ellery accused of murdering an obnoxious comic book publisher.

Long before anybody knew his name, Ted Danson appeared on Laverne & Shirley (Monday at 2:05 p.m. on TBS) as Laverne’s Mr. Right, a daring fireman who plans to pop the big question.

Writer/actor/radio show host Harry Shearer was a child actor when he appeared on Alfred Hitchcock Presents (Monday at 11 p.m. on Nickelodeon) in an episode about a wino who lives life to the fullest after he reads a headline stating the world will end that evening.

Before he played Meathead on “All in the Family,” actor-turned-director Rob Reiner was a beatnik on Gomer Pyle (Tuesday at 2:30 a.m. on TBS) in an episode in which Gomer dates the colonel’s daughter and ends up losing her at a go-go club.

Dabney Coleman, Pat Hingle and Tom Skerrit are featured in the “Nicest Fella You’d Ever Want to Meet” installment of The Fugitive (Wednesday at 2 p.m. on A&E;), which finds Kimble thrown into a small-town jail.

Buddy (Jed Clampett) Ebsen plays a hobo who begins to affect Opie’s ability to tell right from wrong on The Andy Griffith Show (Thursday at 3:35 p.m. on TBS). George Peppard and Peter Lorre guest on Alfred Hitchcock Presents (Thursday at 11 p.m. on Nickelodeon), about a couple whose car- which just happens to have their dead mother in the back seat-is stolen while in Mexico.

I Love Lucy fans can catch five of the best episodes of the legendary series this week on KTTV. Lucy discovers she’s pregnant-although TV standards at the time wouldn’t allow that word on the air (Tuesday at 11 p.m.). Lucy thinks Ricky is only interested in the baby (Wednesday at 11 p.m.). Ricky has false labor pains (Saturday at 4 p.m.). More than 44 million viewers tuned in when Lucy had Little Ricky (Saturday at 5 p.m.). And Little Ricky not only keeps his parents awake with his crying, but the entire apartment building (Saturday at 5:30 p.m.).