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Leonard's Donation - The Big Bang Theory
Watch The Big Bang Theory Season 12 Episode 15
"The Donation Oscillation"
Original Air Date:

On The Big Bang Theory Season 12 Episode 15, Penny tries to seduce an abstaining Leonard to ruin his "donation" for her ex-boyfriend and his wife.

Breaking the Law - The Big Bang Theory
Watch The Big Bang Theory Season 12 Episode 14
"The Meteorite Manifestation"
Original Air Date:

On The Big Bang Theory Season 12 Episode 14, Leonard is disappointed when he's excluded from a project and Bernadette and Wolowitz may be breaking the law.

Kicking Off Amy - The Big Bang Theory
Watch The Big Bang Theory Season 12 Episode 13
"The Confirmation Polarization"
Original Air Date:

On The Big Bang Theory Season 12 Episode 13, Sheldon and Amy's super asymmetry theory is proven by two physicists who try to kick Amy off the Nobel nomination.

Mending Their Relationship - The Big Bang Theory
Watch The Big Bang Theory Season 12 Episode 12
"The Propagation Proposition"
Original Air Date:

On The Big Bang Theory Season 12 Episode 12, Koothrappali tries to mend things with his ex-fiancée, Anu and Penny's ex-boyfriend, Zack, asks for Leonard's help.

Jealousy - The Big Bang Theory
Watch The Big Bang Theory Season 12 Episode 11
"The Paintball Scattering"
Original Air Date:

On The Big Bang Theory Season 12 Episode 11, Penny and Leonard organize a paintball game that results in mayhem while Sheldon is jealous of Amy.

The Magic Castle - The Big Bang Theory
Watch The Big Bang Theory Season 12 Episode 10
"The VCR Illumination"
Original Air Date:

On The Big Bang Theory Season 12 Episode 10, Bernadette helps Wolowitz ace his Magic Castle audition and Sheldon finds a VHS tape from his past.

Amy and Sheldon Are Devastated - The Big Bang Theory
Watch The Big Bang Theory Season 12 Episode 9
"The Citation Negation"
Original Air Date:

On The Big Bang Theory Season 12 Episode 9, Sheldon and Amy are devastated after learning that Super-Asymmetry has already been discovered and disproven.

Bonding - The Big Bang Theory
Watch The Big Bang Theory Season 12 Episode 8
"The Consummation Deviation"
Original Air Date:

On The Big Bang Theory Season 12 Episode 8, when Wolowitz lures Mr. Fowler away with magic tricks, Sheldon has no choice but to bond Amy's mother.

Looking For a Hideaway - The Big Bang Theory
Watch The Big Bang Theory Season 12 Episode 7
"The Grant Allocation Derivation"
Original Air Date:

On The Big Bang Theory Season 12 Episode 7, Bernadette turns the backyard playhouse into aher own hideaway, while Leonard distributes extra grant money.

Halloween Competition - The Big Bang Theory
Watch The Big Bang Theory Season 12 Episode 6
"The Imitation Perturbation"
Original Air Date:

On The Big Bang Theory Season 12 Episode 6, Sheldon seeks retaliation at Leonard and Penny's Halloween party when Wolowitz dresses to look like him.

We know why you want to watch The Big Bang Theory online. We understand why you would seek to stay up to date on everything surrounding Sheldon, Leonard, Penny, Amy and all others. They are totally hilarious! And they are also involved in many sweet and interesting storyline. That's why you want to watch The Big Bang Theory online and that is why we make it oh so easy for TV Fanatics to do so. We update our episodes section on a weekly basis and we make sure you never fall behind. Sit back and watch The Big Bang Theory online now!

TBBT Quotes

Please don't send me back to India! It's so crowded. It's like the whole country is one endless Comic-Con, except everyone's wearing the same costume -- Indian Guy.

Raj

Leonard: Hi. I'm Leonard. You are beautiful. You pop, sparkle and buzz electric. I'm going to pick you up at eight, show you a night you will never forget.
Raj: Where are we going?