26 Things You Didn't Know About "Big Bang Theory"

We finally learned the backstory behind "bazinga!"

15 March, 2024
26 Things You Didn't Know About "Big Bang Theory"

We finally learned the backstory behind "bazinga!"

"Soft Kitty" is a real song.

The "Soft Kitty" song Sheldon's mom used sing to comfort her son is a real song. "It's from my daughter's preschool in Sherman Oaks," Prady revealed at PaleyFest. "It was from Australia, and one of the teachers heard it there."

1"Soft Kitty" is a real song.

The "Soft Kitty" song Sheldon's mom used sing to comfort her son is a real song. "It's from my daughter's preschool in Sherman Oaks," Prady revealed at PaleyFest. "It was from Australia, and one of the teachers heard it there."

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Mayim Bialik's "Blossom" character has been mentioned twice.

Before Bialik joined the cast, the show referenced her childhood role on Blossom, when Raj suggests they invite actress Mayim Bialik to join their bowling team. Then, in Season 6, when Amy and Sheldon compile a list of potential couples costumes, one is Blossom and Joey. Another was Dharma and Greg, a different show from creator Chuck Lorre.

2Mayim Bialik's "Blossom" character has been mentioned twice.

Before Bialik joined the cast, the show referenced her childhood role on Blossom, when Raj suggests they invite actress Mayim Bialik to join their bowling team. Then, in Season 6, when Amy and Sheldon compile a list of potential couples costumes, one is Blossom and Joey. Another was Dharma and Greg, a different show from creator Chuck Lorre.

Jim Parsons is not a Trekkie in real life.

While Sheldon Cooper is obsessed with Star Trek, Jim Parsons actually has never watched it or Doctor Who, he revealed to Time.

3Jim Parsons is not a Trekkie in real life.

While Sheldon Cooper is obsessed with Star Trek, Jim Parsons actually has never watched it or Doctor Who, he revealed to Time.

Mayim Bialik has a PhD in neuroscience.

She's the only cast member with an education in neuroscience, and often likes to make sure her scripts are scientifically accurate!

4Mayim Bialik has a PhD in neuroscience.

She's the only cast member with an education in neuroscience, and often likes to make sure her scripts are scientifically accurate!

Sheldon and Leonard share a real-world inspiration.

Sheldon Leonard is a famous for being an executive producer of The Dick Van Dyke Show and The Andy Griffith Show. And so, the two leading scientists on the CBS sitcom both take their names from the influential Hollywood guru.

5Sheldon and Leonard share a real-world inspiration.

Sheldon Leonard is a famous for being an executive producer of The Dick Van Dyke Show and The Andy Griffith Show. And so, the two leading scientists on the CBS sitcom both take their names from the influential Hollywood guru.

Penny was almost an entirely different character.

Penny's character was originally called Katie in an unaired pilot, and she was played by Amanda Walsh. Walsh played a "hyper-sexual, a bit more raunchy version of Penny." However, the test audience felt overprotective of the guys and didn't like Katie. 

6Penny was almost an entirely different character.

Penny's character was originally called Katie in an unaired pilot, and she was played by Amanda Walsh. Walsh played a "hyper-sexual, a bit more raunchy version of Penny." However, the test audience felt overprotective of the guys and didn't like Katie. 

There is only one set of stairs.

According to Glamour, there's only one set of stairs on set. So, every time an actor walks up and down a set of stairs, it's the same staircase, but "redressed" as different floors of the building. Ah, TV magic!

7There is only one set of stairs.

According to Glamour, there's only one set of stairs on set. So, every time an actor walks up and down a set of stairs, it's the same staircase, but "redressed" as different floors of the building. Ah, TV magic!

"Bazinga" came from a recurring practical joke with a grapefruit.

Show writer Stephen Engel would set up a recurring practical joke that involved taping a hallowed out grapefruit back together.  "I'd open it up and [he] would say 'bazinga," executive producer Bill Prady told Entertainment Tonight. "It was Stephen's word for gotcha." And thus bazinga was born.

8"Bazinga" came from a recurring practical joke with a grapefruit.

Show writer Stephen Engel would set up a recurring practical joke that involved taping a hallowed out grapefruit back together.  "I'd open it up and [he] would say 'bazinga," executive producer Bill Prady told Entertainment Tonight. "It was Stephen's word for gotcha." And thus bazinga was born.

Raj's women problem is based on the executive producer's old friend.

Raj's characteristic of only being able to talk to women when he's drunk is based upon EP Bill Prady's old coworker, who has the same problem

9Raj's women problem is based on the executive producer's old friend.

Raj's characteristic of only being able to talk to women when he's drunk is based upon EP Bill Prady's old coworker, who has the same problem

Every episode is named after a scientific theory.
10Every episode is named after a scientific theory.
We still don't know Penny's last name.

Except for the pilot, which is titled "pilot."

 

11We still don't know Penny's last name.

Except for the pilot, which is titled "pilot."

 

Leonard's glasses are fake.

While we've heard most characters' last names ... Penny's remains a mystery (well, her maiden name). Executive producer Steve Molaro told Vulture, "We're kind of a superstitious lot here. We've made it this far without knowing Penny's last name. I think we're good not finding out."

Any guesses?

12Leonard's glasses are fake.

While we've heard most characters' last names ... Penny's remains a mystery (well, her maiden name). Executive producer Steve Molaro told Vulture, "We're kind of a superstitious lot here. We've made it this far without knowing Penny's last name. I think we're good not finding out."

Any guesses?

Bernadette's voice isn't real.

If you look closely, the glasses Leonard wears don't have lens inside; they are just frames because Johnny Galecki (unlike Leonard) doesn't have bad eyesight.

13Bernadette's voice isn't real.

If you look closely, the glasses Leonard wears don't have lens inside; they are just frames because Johnny Galecki (unlike Leonard) doesn't have bad eyesight.

The show wasn't originally called "The Big Bang Theory."

Who could ever mistake Bernadette's high-pitched voice? Turns out, Melissa Rauch impersonated her mother's voice for the character. "Only without the Jersey! Tonally, it's very similar," the actress said at the PaleyFest panel in 2013.

14The show wasn't originally called "The Big Bang Theory."

Who could ever mistake Bernadette's high-pitched voice? Turns out, Melissa Rauch impersonated her mother's voice for the character. "Only without the Jersey! Tonally, it's very similar," the actress said at the PaleyFest panel in 2013.

Johnny Galecki and Kaley Cuoco dated in real life.

Originally, the show was called "Lenny, Penny and Kenny" before creators came up with The Big Bang Theory.

15Johnny Galecki and Kaley Cuoco dated in real life.

Originally, the show was called "Lenny, Penny and Kenny" before creators came up with The Big Bang Theory.

The original pilot was completely different.

No wonder Leonard and Penny have lots of chemistry — the actors actually dated in real life during the show! "It was such a huge part of my life and no one knew about it," Cuoco previously told CBS Watch in 2010. "It was a wonderful relationship, but we never spoke a word about it and never went anywhere together."

16The original pilot was completely different.

No wonder Leonard and Penny have lots of chemistry — the actors actually dated in real life during the show! "It was such a huge part of my life and no one knew about it," Cuoco previously told CBS Watch in 2010. "It was a wonderful relationship, but we never spoke a word about it and never went anywhere together."

There's an official science advisor to consult on every episode.

The original pilot was for an entirely different show. According to IMDB, the unaired pilot introduced two awkward scientists, Leonard and Sheldon, who share an apartment and invite a drunk girl Katie to stay with them because she had nowhere else to go. The characters of Leonard and Sheldon were the only part the creators kept.

17There's an official science advisor to consult on every episode.

The original pilot was for an entirely different show. According to IMDB, the unaired pilot introduced two awkward scientists, Leonard and Sheldon, who share an apartment and invite a drunk girl Katie to stay with them because she had nowhere else to go. The characters of Leonard and Sheldon were the only part the creators kept.

Jim Parsons failed a science class in college.

UCLA professor David Saltzberg makes sure the science is accurate in the script each week. He looks into every formula to ensure accuracy. According to NPR, Saltzberg studies high-energy particle physics and high-energy neutrino astronomy.

18Jim Parsons failed a science class in college.

UCLA professor David Saltzberg makes sure the science is accurate in the script each week. He looks into every formula to ensure accuracy. According to NPR, Saltzberg studies high-energy particle physics and high-energy neutrino astronomy.

The special connection between 73 and Jim Parsons

Turns out, Jim Parsons is far from Sheldon Cooper. In an interview with Time, Parsons admitted that when in college, he actually failed a meteorology class.

19The special connection between 73 and Jim Parsons

Turns out, Jim Parsons is far from Sheldon Cooper. In an interview with Time, Parsons admitted that when in college, he actually failed a meteorology class.

The photos on Penny's fridge are of the cast and crew.

 According to Radio Times, the number often seen on Sheldon's shirts are a nod to the year that star Jim Parsons was born: 1973

20The photos on Penny's fridge are of the cast and crew.

 According to Radio Times, the number often seen on Sheldon's shirts are a nod to the year that star Jim Parsons was born: 1973

Amy's apartment number represents Pi.

A tiny blink-and-you-missed-it detail from Penny's apartment showcases the camaraderie behind-the-scenes, as the photos on the fridge were taken of the Big Bang Theory cast and crew.

21Amy's apartment number represents Pi.

A tiny blink-and-you-missed-it detail from Penny's apartment showcases the camaraderie behind-the-scenes, as the photos on the fridge were taken of the Big Bang Theory cast and crew.

The secret "Big Bang" / "The Flash" crossover

If you recall, Amy's apartment number is 314. As in the first three digits of Pi.

22The secret "Big Bang" / "The Flash" crossover

If you recall, Amy's apartment number is 314. As in the first three digits of Pi.

All the actors can actually play their instruments.

Sheldon often wears The Flash t-shirts, but have you spotted the Big Bang Theory-themed clothing sported by Cisco Ramon (Carlos Valdes) in the CW's adaptation?

23All the actors can actually play their instruments.

Sheldon often wears The Flash t-shirts, but have you spotted the Big Bang Theory-themed clothing sported by Cisco Ramon (Carlos Valdes) in the CW's adaptation?

Penny always uses the same purse.

During the musical sequences of Big Bang scenes, there's no fake-playing necessary! All the actors have actually learned to play their character's go-to instruments. Bialik plays the harp, Parsons the theremin, and Galecki the piano.

24Penny always uses the same purse.

During the musical sequences of Big Bang scenes, there's no fake-playing necessary! All the actors have actually learned to play their character's go-to instruments. Bialik plays the harp, Parsons the theremin, and Galecki the piano.

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