Sonny and Cher starred in a rather popular show — The Sonny & Cher Comedy Hour — on CBS from 1971 to 1974. Then they got divorced and each one starred in their own series. The Sonny Comedy Revue went on the air for ABC on September 22 of '74 and didn't do too well. It was pretty much the same show, sans Cher, but that seems to have made a big difference.
Its last episode aired December 29, 1974. If it had stayed on another six weeks or so, it would have been on opposite Cher's new show which had its first airing on February 12, 1975. Hers did a little better, perhaps in part because of better guest star bookings. It lasted until January 4, 1976, after which time the two of them reconciled and did a new Sonny & Cher Show which ran a year and a half.
This is the first episode of Cher's series with guest stars Bette Midler, Elton John and Flip Wilson. It got pretty good reviews at the time, more for the musical spots than for the comedy material. Personally, I never thought I'd see a TV show and think, "This needs Sonny Bono!"