Sheldon’s life is turned upside-down after his barber gets sick. Meanwhile, astronaut training causes Wolowitz to rethink his decision to go into space.

The title is derived from Sheldon missing out his haircut schedule, due to his regular barber being hospitalized and he refuses to get his haircut somewhere else, which leads to his hair growing out a little bit, thus equating this situation to a werewolf transformation.

Series regulars:

Leonard -Johnny Galecki

Sheldon -Jim Parsons

Penny -Kaley Cuoco

Wolowitz- Simon Helberg

Koothrappali- Kunal Nayyar

Amy-Mayim Bialik

Bernadette -Melissa Rauch

Guest Stars: 

Vernee Watson – Althea

Peter Onorati – Angelo

Carol Ann Susi – Mrs. Wolowitz

Air Date: February 23, 2012