Two famous ‘60s couples who have since...

Two famous ‘60s couples who have since split--Sonny & Cher and Martin Landau and Barbara Bain--are guests on The Smothers Brothers Comedy Hour (Monday at 5 p.m. on E!).

Georgia Engel makes her first appearance as Georgette on the “Rhoda Morgenstern: Minneapolis to New York” episode of The Mary Tyler Moore Show (Tuesday at 10:30 p.m. on Nickelodeon).

Long before Carol Burnett got her own series, she made several guest appearances on The Lucy Show (Friday at 10:30 and next Sunday at 2:30 a.m. on Nickelodeon) as Lucy’s friend with whom she attends airline stewardess school.

The Jefferson Airplane and Bette Davis visit The Smothers Brothers Comedy Hour (Saturday at 8:30 p.m. on E!).