“Nip/Tuck” (10 p.m., Fox): “Knots Landing” stars Joan Van Ark and Donna

“Nip/Tuck” (10 p.m., Fox): “Knots Landing” stars Joan Van Ark and Donna Mills reunite on a new episode of “Nip/Tuck.” They play wealthy socialites who hire Christian for all their plastic surgery needs. Sharon Gless and Shari Belafonte also guest star.