Pixar have released four different teaser trailers for the long awaited prequel of Monsters Inc, "Monsters University". The film will take place with Sulley and Mike first meeting at university and learning how to scare. The trailers feature Mike playing a late night prank on Sulley, cliche college behaviour. It is yet to be seen whether there is more substance and depth to this film. However, with Pixar releasing four different versions of this teaser trailer, it is easy to enjoy the wonderful characters and world that made Monsters Inc such an enjoyable film without worrying about its release.The four variations come from Billy Crystals improvisational skills. Each time Mike pulls back the covers to play his prank, Sulley, played by Billy Crystal, invents a completely different line. Pixar have found a very novel and efficient way to step up anticipation for this film. Finding myself excited to hear the variating one-liners, I did begin to imagine the comedic possibilities Monsters University may be able to offer. Monsters University is due to be released June 21, 2013.