Kirsten Dunst as Joyce Taylor, Joshua Jackson as Devon Taylor, Howard Hesseman as Dr. Emory Taylor, Larry Musser as Dr. Evan Swift, Ryan Taylor as Vic, Gina Chiarelli as Doctor #2, Kamilyn Kaneko as Kelly, Douglas Newell as Principal, Freda Perry as Nurse, Ronin Wong as Doctor #1, Andrew Younghusband as D.J., Jonathan Whittaker as Colonel Bowen