Can you believe that The Big Bang Theory has been going strong for eleven seasons? It seems like it was just yesterday when Penny moved across the hall from Sheldon and Leonard.
Of course, when a show is on for over a decade, there's going to be a lot of fun behind-the-scenes trivia.
Let's get our geek on!
Sheldon might be a huge fan of all things science fiction, but Jim Parson's certainly isn't.
How did I not notice this?!
I love this fact because it's so realistic! Most people really only have one or two purses.
He played her love interest in the episode, and he even took her to a "make-out party"!
Sheldon and Amy discuss what to dress up as for Halloween. One of the suggestions from Amy is Blossom and Joey, from the '90s sitcom!
And so are Simon Helberg and Kunal Nayyar!
According to Forbes, the only actor to make more money than The Big Bang Theory cast in 2017 was SofÃa Vergara.
Just in that year alone, he's made $24 million!
Leonard was the first person to talk to Penny, Howard was the first to talk to Bernadette, and Sheldon was the first to talk to Amy.
That song was actually written by Chuck Lorre, who created The Big Bang Theory.
His name is Gerrit Schmidt-Foß, and he even did DiCaprio's voice for the German-dubbed version of Titanic!
And some of them are pretty intense!
He often uses these cards to voice his own opinion on various topics, and he even criticized Donald Trump in one of them just days before the 2016 presidential election.
In this episode, Leonard asks Penny out again, and this costume choice probably signifies the fact that he is falling back in love with her.
It literally starred four scientists named Sheldon, Leo, Hovart, and Raj.
When Sheldon plays the instrument on the show, that's actually Parsons playing.
We're pretty impressed because the theremin is considered on of the most difficult instruments to play.
In her first appearance back on the show after the accident, she was filmed standing behind a counter.
According to Johnny Galecki, he had to pop the lenses out because of the height difference between him and Jim Parsons.
When he looks up with lenses in, the set lights are reflected by the glass and it shows up on camera.
So she really knows what she's talking about.
Bialik completed her Neuroscience studies degree in 2008, and then went on to earn her PhD in Neuroscience.
It's because they are all filmed on the exact same set and the viewer would probably notice that's it's just the same redecorated space.
The writers of The Big Bang Theory were big fans of Sheldon Leonard who produced classic shows like The Andy Griffith Show and I Spy.
Raj can only talk to women if he has consumed alcohol, a quirk that was based on an old coworker of Executive Producer Bill Prady.
Sheldon frequently wears shirts that reference The Flash and Cisco Ramon on The Flash wears shirts that reference The Big Bang Theory, including one that featured Sheldon's catchphrase, "Bazinga!"
Yup, Sheldon's soothing song is taken from an Australian kid's show called Play School. Bill Prady recognized the song from his own daughter's preschool.
Your favorite on-screen couple was once a real-life item!
Unfortunately, they are no longer together, but we still got to see them get hitched because their on-screen characters are married!
The actress broke her hand in an car accident in the summer of 2012, so the show had to employ some fancy camera tricks to hide her cast.
Sheldon has repeatedly stated that 73 is his favorite number, but did you know that Jim Parson's was also born in 1973?
When Sheldon knocks on Penny's door, he always calls her name three times.
However, in Season 1, he knocked on Penny's door without doing anything special.
Kevin Sussman, who plays the comic book store owner on The Big Bang Theory, actually worked in a comic book store before he became an actor!
All of his figurines are female, except for Jabba the Hutt, but even he is accompanied by Leia.
In an interview, she said that he was invited to her 16th birthday party but he got into a motorcycle accident on the way there!
Will Wheaton's character on the show lives in the house 1701, which is a reference to the serial number of the USS Enterprise on Star Trek! Will used to be on Star Trek: The Next Generation. Amy's apartment is numbered 314, the mathematical figure Pi!
Lorre wanted to make sure that the first audition wasn't a fluke! When the second audition went just as well, he hired Parsons on the spot!
In the earlier seasons, Melissa Rauch spoke in her normal speaking voice but decided to change it each time the character made an appearance.
Leonard is supposed to be playing Halo against someone in Copenhagen, but there is no Ethernet cable or wireless adapter connected to the Xbox 360, so he couldn't be playing online.
Apparently, it was part of a prank involving an old grapefruit in the writers' room. The writers used to say the word as a way of saying "gotcha!" whenever someone opened up something and the grapefruit was in there!
And apparently, because of superstitious reasons, the writers don't ever plan on revealing it.
Do you know a behind-the-scenes fact about The Big Bang Theory that we missed? COMMENT and let us know!
