Find the best and most entertaining NCIS quizzes to share with your friends. Take quizzes about NCIS plot lines and your favorite NCIS characters and actors including Leroy Jethro Gibbs (Mark Harmon), Anthony DiNozzo (Michael Weatherly), Abby Sciuto (Pauley Perrette), Dr. Donald 'Ducky' Mallard (David McCallum), and Timothy McGee (Sean Murray).