Buzz & Diane: the #2 Brother-Sister Variety Act of 1979 June 28, 2012

It's 1979. Jimmy Carter is running for re-election. There's a hostage crisis in Iran. But most importantly, Buzz and Diane, America's second-favorite brother-sister duo, have snagged JOYCE DEWITT ('Three's Company,' almost nothing else) as the guest star for their live television variety show.