In the excitement of Monsters University, Billy Crystal and John Goodman found the time to sit down with Collider and discuss the sequel which is really a prequel. In the interview, the respectable voices of Mike and Sulley discuss what they think about the new movie and the differences between the younger versions of their characters. They even share some stories from their own college days and offer advice about how to get out of class. Monsters University opens everywhere June 21st.