The Big Bang Theory Season 5. The fifth season of the American sitcom The Big Bang Theory was originally aired on CBS from September 22, 2011, to May 10, 2012, over 24 episodes. Outstanding Lead Actor in a Comedy Series for “The Werewolf Transformation”, but lost out to Jon Cryer. Penny regrets her sleeping with Raj and has become very good friends with Leonard, Leonard breaks up with Priya, Amy pushes Sheldon in russian bride prenup relationship eventually becoming boyfriend and girlfriend, Penny and the other women become a clique of their own, Howard prepares for his wedding and going into space to the International Space Station and Leonard asks Penny out as they begin “Leonard and Penny 2.

The fifth season was ordered in a three-year renewal for The Big Bang Theory, extending the series through the 2013-2014 season. Several high-profile celebrities appear in the season. In “The Transporter Malfunction”, actor Leonard Nimoy appears as a voice actor, playing an action-figure Spock that Sheldon imagines talking to him. Stephen Hawking went on to appear in the season 6 episode “The Extract Obliteration” and the season 7 episode “The Relationship Diremption”. This section’s plot summaries may be too long or excessively detailed. Please help improve them by removing unnecessary details and making them more concise.

Raj finds himself in hot water with Leonard after his night with Penny and also with Howard after he discovers Raj’s fantasies about Bernadette. Raj has feelings for Penny and talks to her about the recent events. Title reference: Amy’s term for Penny’s promiscuous behavior that is responsible for releasing dopamine. Amy also reminds her that while Catherine the Great was accused of having sex with a horse, she still was considered “great”. Penny gets a new chair, which Sheldon enjoys until he finds out that she picked it up from the street. He becomes paranoid about the chair due to his mysophobia and constantly pesters Penny to dispose of it, to no avail.