Pixar and Walt Disney Studios have unveiled the first teaser trailer for Monsters University, the prequel to their 2001 hit Monsters, Inc. Directed by Dan Scanlon, and featuring the voices of Steve Buscemi, John Ratzenberger, Dave Foley, Frank Oz, Joel Murray, J.B. Smoove, Ken Jeong, Rob Riggle, and Kelsey Grammer, Monsters University is scheduled for a June 21st, 2013 release. Watch it now here: