Nick at Nites repeats the Emmy Award-winning...

Nick at Nites repeats the Emmy Award-winning “Chuckles Bites the Dust” episode of The Mary Tyler Moore Show (Sunday at 11 p.m. on Nickelodeon), in which WJM’s kids’ personality, Chuckles, meets a particularly macabre demise.

Kathryn Harrold (“I’ll Fly Away”) plays a blind psychologist with whom Rockford falls in love on a two-part The Rockford Files (Monday and Tuesday at 3 p.m.; Tuesday and Wednesday at 10 a.m. on A&E;).

The Family Channel repeats Roots (Monday-Saturday at 8 and 11 p.m.), Alex Haley’s landmark 1977 miniseries about his family.

A young John Ritter plays the minister who marries Ted and Georgette on The Mary Tyler Moore Show (Wednesday at 9 p.m. on Nickelodeon).

Long before she won her Oscar as Miss Daisy, Jessica Tandy guest starred on O’Hara, U.S. Treasury (Wednesday at 9 a.m. on A&E;) as a former artists’ model who helps O’Hara nab an art swindler; Tandy also guests on Alfred Hitchcock Presents (Thursday at 10:30 p.m. on Nickelodeon) in a thriller about a woman who has been hiding a secret from her childhood sweetheart for 20 years.

Bob Denver plays Charlene Darling’s estranged husband on The Andy Griffith Show (Wednesday at 3:35 p.m. on TBS).

Ted Bessell of “That Girl” fame plays Mary’s new love interest on The Mary Tyler Moore Show (Thursday at 9 p.m. on Nickelodeon).

It’s a sad time for Ed Heads. After 6 1/2 years, Nick at Nite is closing the stable on one of its best-loved series, Mr. Ed. But Ed, Wilbur and company are going out not with a whinny, but with a Kentucky Derby of marathons--17 1/2 hours of the best of Ed (Saturday from 10 p.m.-6 a.m. and next Sunday from 8 p.m.-5:30 a.m.).

Set your VCRs for A&E;’s 13-hour marathon presentation of the 1984 Emmy Award-winning British series, The Jewel in the Crown (beginning next Sunday at 5 a.m. until 8 p.m.).