The Big Bang Theory

On the season premiere, Sheldon & Amy honeymoon in New York, while Leonard & Penny discover they’re uncomfortably similar to Amy’s parents.

Sheldon and Amy are baffled by Penny and Leonard's wedding gift; Raj decides he wants his father to find him an arranged marriage.

The Wolowitzes' life gets complicated when Stuart starts bringing his new girlfriend home; Penny and Leonard talk about starting a family.

When Sheldon won't tell anyone why he's never mentioned Tam, his childhood best friend, Leonard takes matters into his own hands.

Sheldon sabotages Amy's career and gets a ghostly visit from an old friend; Raj refuses Howard's offer to co-host a planetarium show.

When Wolowitz dresses up as Sheldon for Halloween, Sheldon seeks retaliation at Leonard and Penny's Halloween party.

Leonard regrets his newfound authority when he's responsible for distributing grant money; Bernadette turns the playhouse into her hideaway.

Sheldon tries to bond with Amy's parents, but Howard lures Mr. Fowler away with magic tricks; Raj & Anu have trouble making things physical.

Sheldon and Amy are devastated to learn that Super-Asymmetry has already been disproven; Stuart's girlfriend teaches Bernadette Fortnite.

Sheldon and Amy are still down about their theory being disproven, but a VHS tape from Sheldon's past inspires him not to give up.

A paintball game causes mayhem when Sheldon is jealous of Amy, Raj catches Anu with her ex, and Stuart doesn't want to move in with Denise.

Penny’s ex-boyfriend Zack and his wife want a baby, but when he’s infertile, they ask Leonard for help; Raj tries to mend things with Anu.

A rival team of Physicists tries to take credit for Amy and Sheldon's Super Asymmetry theory; Bernadette has a big success at work.

Sheldon is thrilled to help Howard & Bernadette navigate bureaucratic paperwork… until he discovers they are breaking the law.

Penny tries to seduce an abstaining Leonard to ruin his donation for Zack; Howard, Bernadette, Anu and Raj go on a couple's trip.

The guys try to crash Wil Wheaton's Dungeons & Dragons game involving William Shatner, Joe Manganiello, Kareem Abdul-Jabbar and Kevin Smith.

While Penny and Bernadette are away at a pharmaceutical convention, Sheldon, Leonard, Howard, Raj and Amy experiment on the Wolowitz kids.

When competitors Pemberton and Campbell charm America on a publicity tour, Sheldon and Amy try to bring Nobel laureates to their side.

The weight of winning a Nobel Prize weighs heavy on Amy's shoulders; Raj and Howard try to relive the good old days.

Penny encourages Leonard to stand up for himself; Raj is worried after publishing a paper suggesting he may have discovered alien life.

When Barry finds proof that Dr. Pemberton plagiarized his college thesis, Sheldon and Amy try to take the high road for the Nobel Prize.

Leonard's surprised when Beverly comes to visit and she's genuinely kind to him; Denise and Stuart overstay their welcome at the Wolowitz's.

Everything changes as Sheldon and Amy await big news in part one of the series finale.

It's an end and a beginning as the gang travel together on part two of the series finale.