Question: watch series the big bang theory season 3

title: The Big Bang Theory
text: Mayim Bialik as Amy Farrah Fowler ( guest star season 3 , starring seasons 4 -- ) : A woman selected by an online dating site as Sheldon 's perfect mate . Amy is from Glendale , CA . While she and Sheldon initially share social cluelessness , after befriending Penny and Bernadette she eventually becomes more interested in social and romantic interaction . Her relationship with Sheldon slowly progresses to the point at which Sheldon considers her his girlfriend . Amy believes she and Penny are best friends , a sentiment that Penny does not initially share . Amy has a PhD in neurobiology .