This season, Leonard gets a girl. So does Sheldon. Howard drives the Mars Rover into a ditch. Raj woos a terminator. Gorgeous girl-next-door Penny falls under the spell of Age of Conan. And super-smart, ueberconfident Leslie Winkler reduces mere men to spineless jellyfish.

Life as a child genius continues to present more brain games for Sheldon as he tackles ambitious projects, social dilemmas and family crises.

With high school in the rearview, Sheldon mentally prepares for college as an 11-year-old while the Cooper family deals with issues of their own.

Sheldon is rescued from his soul-searching cross-country train trip (older but no wiser) and that means The Big Bang Theory gang's all here to spread another gear's cheer as TV's most attended laugh seminar. Enrol in the comic curriculum to observe Leonard's minor surgery, which signals a major catastrophe for Sheldon, Howard's obsession over his mum's relationship with friend-turned-freeloader Stuart and the unexpected results of Penny's technique as a pharmaceutical sales rep. Discover ways to re-create proms not attended or holiday celebrations not especially beloved and play a new game based on Raj's dating life. Savour online fan Fiction by Amy, watch Bernadette take indelicate command of some delicate family matters and, who knows, you might spot a cool special guest or two.

Our two genius roommates, Leonard and Sheldon, and their friends are back once again (smarter, but no wiser). Last season, Sheldon went soul-searching (on a train, of course) and was prepared to make some substantial revisions on his Relationship Agreement with Amy, when everything changed. Leonard, meanwhile, was off to Vegas with Penny to finally tie the knot in the season finale. Howard finds himself alone with Bernadette after the sudden passing of his mother; while Raj is not only talking to women – he’s getting exclusive with Emily. Together, they will all learn that life is far more complicated outside of the lab as love and friendship never produce predictable results!

Leonard and Penny renew their vows, this time inviting their friends and family for wedding party; they also learn that marriage is about compromise, and figure out how to support each other. Sheldon and Amy experiment to take their relationship to the next level, and after an emotional struggle they move in together in Penny's old apartment. Howard and Bernadette realise that being a parent is a full-time job, but with the help of their friends they manage to find joy in raising their child. When his friends tell him he's extremely spoiled, Raj decides to stop taking his father's money and learn how to make ends meet.

After years of only looking out for himself, Sheldon found Amy Farrah Fowler to be the most patient woman to ever walk the earth, and... they did it! Wedding fever continues in season 11.

When Leela is insulted by a group of space-rednecks (like regular rednecks, but in space) she enters the Planet Express ship in a demolition derby. She emerges victorious, but when she brings the damaged ship home and the Professor sees the fuel gauge, he's enraged by the hit he's going to take at the Dark Matter pump. Now the crew have to find a way to break Mom's stranglehold on starship fuel, even if they have to wade through a Lord of the Rings-inspired fantasy-land to do it!

Fresh off ripping space-time a new one at the end of "Bender's Big Score," the Planet Express crew is back to mend the tear in reality, or (hopefully) at least not make it worse.

Beyond the tear, though, lurks a being of inconceivable... tentacularity.

What will become of Earth, and indeed, our universe, when faced with the Beast with a Billion Backs?