I can never get enough of old musical and comedy variety shows these days. I remember them being rather cheesy from what I can remember of their original airings, but they are yet another thing that gets better with age. There were many of these throughout the 1960s and 70s, anchored by star hosts with a never-ending parade of different guest stars every week to do their own musical numbers and join in the comedy sketches. Sonny and Cher were two of the biggest stars in this genre- in 1971 they were set to take up residency for a live show in Las Vegas when they had to cancel because CBS offered them a weekly TV show, five episodes of which are featured here.
From http://www.dvdtalk.com/reviews/read.php?ID=74249