Our beloved Frankensteins are back! On September 27, 2012, the highly anticipated sixth season of The Big Bang Theory finally premiered on American TV. In this season, the four geniuses still live their relaxed and hilarious home life, while more problems and difficulties need to be faced and solved. At the end of the last season, Howard (Simon Helberg) and Bernadette (Melissa Rauch) finally completed their marriage. In this season, can they live peacefully under the same roof with Howard's fiery mother? Leonard (Johnny Galecki) and Penny (Kaley Cuoco) are on and off, and they are still facing the old problems that once led to their breakup. Raja (Kunal Nayyar) is still alone, and is Sheldon (Jim Parsons) and Amy (Mayim Bialik) really okay in their relationship? In short, the geniuses are back, and happy life continues.