Find the best and most entertaining The Big Bang Theory quizzes to share with your friends. Take quizzes about The Big Bang Theory plot lines and your favorite The Big Bang Theory characters and actors including Leonard Hofstadter (Johnny Galecki), Sheldon Cooper (Jim Parsons), Howard Wolowitz (Simon Helberg), Rajesh Koothrappali (Kunal Nayyar), and Penny (Kaley Cuoco).