Are you looking to watch The Big Bang Theory online? Good! You've come to the right place. We make it easy to watch The Big Bang Theory online on a weekly basis.

Big Bang Guest Stars
Watch The Big Bang Theory Season 4 Episode 4
"The Hot Troll Deviation"
Original Air Date:

We learn of an embarrassing secret about Wolowitz this week. How is that for a tease?!? Read our recap to learn more.

The Zazzy Substitution Scene
Watch The Big Bang Theory Season 4 Episode 3
"The Zazzy Substitution"
Original Air Date:

The focus of this week's episode: Sheldon's search for an alternative to human companionship. Read on to see how that goes.

A Sheldon Diagram
Watch The Big Bang Theory Season 4 Episode 2
"The Cruciferous Vegetable Amplification"
Original Air Date:

By the time he downloads his consciousness into a robot body, Sheldon realizes he'll be long gone. As a result, he attempts to make himself live longer.

Feelin Good
Watch The Big Bang Theory Season 4 Episode 1
"The Robotic Manipulation"
Original Air Date:

Penny tags along for Sheldon's first date on the fourth season premiere. Elsewhere, Wolowitz discovers a new use for a robotic arm.

Big Bang Scene
Watch The Big Bang Theory Season 3 Episode 23
"The Lunar Excitation"
Original Air Date:

Blossom alert! Former sitcom star Mayim Bialik guest stars on the season finale as a potential love interest for Sheldon.

Nerdy Flashback
Watch The Big Bang Theory Season 3 Episode 22
"The Staircase Implementation"
Original Air Date:

Leonard tells Penny the story of how the apartment elevator broke through a series of flashbacks.

Judy Greer on Big Bang Theory
Watch The Big Bang Theory Season 3 Episode 21
"The Plimpton Stimulation"
Original Air Date:

Sheldon has a female physicist, Dr. Plimpton (Judy Greer) spend the night at the apartment.

Back from Disney Land
Watch The Big Bang Theory Season 3 Episode 20
"The Spaghetti Catalyst"
Original Air Date:

After Penny and Leonard break up, Sheldon goes behind Leonard's back to hang out with Penny.

Nerd Bowl Off
Watch The Big Bang Theory Season 3 Episode 19
"The Wheaton Recurrence"
Original Air Date:

Sheldon goes up against his nemesis, Wil Wheaton at the bowling alley while Leonard and Penny have their own fight.

Sheldon Cooper, No Pants
Watch The Big Bang Theory Season 3 Episode 18
"The Pants Alternative"
Original Air Date:

When Sheldon is forced to give an acceptance speech for an award he received, he must overcome his stage freight.

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

Sheldon: Why do you have the Chinese character for "soup" tattooed on your right buttock?
Penny: It's not "soup," it's "courage."
Sheldon: No it isn't. But I suppose it does take courage to demonstrate that kind of commitment to soup.
Penny: How'd you see it? You said you wouldn't look.
Sheldon: Sorry. As I told you, the hero always peeks.

Penny: Hey, Sheldon, did you change your Wi-Fi password again?
Sheldon: Yes, it's "Penny, get your own Wi-Fi." No spaces.