Disney•Pixar’s “Monsters University” welcomes some of Hollywood’s top stars to its roster of voice talent for this summer’s frighteningly funny comedy adventure, opening in U.S. theaters on June 21, 2013. Joining Billy Crystal and John Goodman are Steve Buscemi, Helen Mirren, Alfred Molina, Dave Foley, Sean P. Hayes, Joel Murray, Peter Sohn, Charlie Day, Nathan Fillion, Bobby Moynihan, Julia Sweeney, Aubrey Plaza, Tyler Labine, John Krasinski, Bonnie Hunt, Beth Behrs and John Ratzenberger. Also revealed this week were the story and screenplay credits. Directed by Dan Scanlon, “Monsters University” features a story and screenplay by Daniel Gerson & Robert L. Baird (“Monsters, Inc.”) and Scanlon. Scanlon says the cast was able to bring the story to life with great ingenuity and enthusiasm. “Working with this group of actors was an extraordinary experience. They each brought a unique level of humor, emotion and creativity to their work that not only complemented their individual