Chester: Do you know what extension he's on? 80 mg prozac for ocd When Knight was just an up-and-coming singer with the Pips, she and her group toured with Davis. “Sammy just took us under his arms,” said the great-grandmother of five. Knight, 69, recently appeared on season 14 of “Dancing With the Stars,” where she gamely fox-trotted and salsa-danced her way into viewers’ hearts.