The big bang theory. The complete sixth season [DVD] / Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg, Kunal Nayyar, Chuck Lorre, Bill Prady, Steven Molaro, Eddie Gorodetsky.
Season six kicks off in space, where Howard is caught in an argument between Bernadette and his mom. Back on Earth, Sheldon decides to hire Alex, a young female assistant, which makes Amy feel threatened. Meanwhile, Howard and Penny make strides to define their relationship and Raj attempts to find love. Find out what surprises are in store for everyone, once Howard returns home.
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