Jane Krakowski is an American actress and singer who is best known for her role as Jenna Maroney on the NBC sitcom 30 Rock, for which she received four Primetime Emmy Award nominations for Outstanding Supporting Actress in a Comedy Series, and for her performance as Elaine Vassal on Ally McBeal, for which she was nominated for a Golden Globe Award. She also regularly performs on the stage and won a Tony Award for her performance in the Broadway revival of Nine and an Olivier Award for her role as Miss Adelaide in the West End revival of Guys and Dolls. Krakowski is also known as the voice of Giselle in Open Season and Open Season 2, and for her role as Irene in the film Go.
She made her first appearance in the Season 5 episode: “Under Pressure” as Dr. Donna Duncan, who becomes Gloria’s nemesis. Krakowski portrayed Donna later in “Basketball” | S8, and in “Clash of Swords” | S9.