Tina Marie Majorino is an American film and television actress. She started her career as a child actor, starring in films such as Andre; When a Man Loves a Woman; Corrina, Corrina; and Waterworld. After her early success as a child actor, she returned to acting at age 18, with what remains one of her best known roles to date, the character Deb in the 2004 film Napoleon Dynamite. Since her return to acting, she has been in television series such as Veronica Mars, Big Love, True Blood and Grey's Anatomy. She returned to the role of Mac in the Veronica Mars movie, and has played the part of Maggie Harris on the television series Legends. She later appeared in the recurring role of Florence in the television series Scorpion.