You're so right. Carol afforded us the only opportunity that I'm aware of to hear Rita Hayworth's actual singing voice. They're did "Mutual Admiration Society" on the show one night, and Rita had a pleasant voice despite her nerves at singing before an audience.
My absolute favorite "Family" sketch was when the group was cleaning out Mama's attic. Betty White's character is taking all of the good stuff and when Eunice complains, Mama tries to compensate with lesser stuff. I also adored the one where Maggie Smith played Bubba's teacher.