"The Werewolf Transformation" is the 18th episode of the fifth season of the U.S. sitcom The Big Bang Theory and the 105th episode of the show overall. It first aired on CBS on February 23, 2012.In the episode, Sheldon (Jim Parsons) abandons his methodical approach to life after failing to get a haircut from his usual barber, while Howard (Simon Helberg) has a rough time in his astronaut training. The episode was submitted for Parsons' Emmy nomination, but received mixed reactions from critics.