The actual apartments
I'm sure you've watched the show many times that you can´t remember when was the last time you spent a day without the show. But have you ever wonder about the apartments distribution?
Penny, I didn’t get your last name.
Unlike the other characters, Penny is the only one whose surname has never been revealed. Some rumors say that Kaley Cuoco Sweeting dreams with keeping this a mystery for the whole series.
The opinion of the crew
Despite the Co-creator Bill Prady has said that the name will be revealed eventually, producer Steve Molaro has said the opposite. But all the other main characters have their own last name. Even Stuart!
I’m a real PhD
In 2007 Mayim Bialik finished her studies and got a PhD in neuroscience studies. After being a star in Blossom as a child, she attended UCLA even though she was accepted at Harvard and Yale.
She studies a lot
That PhD isn't her only study. In fact, she earned a BS degree in neuroscience, Hebrew studies and Jewish studies. She wrote a paper about an investigation of hypothalamic activity in patients with Prader–Willi syndrome, titled 'Hypothalamic regulation in relation to maladaptive, obsessive-compulsive, affiliative, and satiety behaviors in Prader-Willi syndrome'.
Science isn't the only passion for this group of nerds. Most of them are also talented musicians. And yes, Guitar Hero also counts for this, please give them a break!
I really studied
In fact, Johnny Galecki has been a cellist from a young age and used this skill for his character. On the other hand, Jim Parsons and Mayim Bialik learned how to play the theremin and the harp, especially for the show.
That show rings a bell
Belarus had made the news thanks to a show called The Theorists, a total rip-off of The Big Bang Theory. Its main characters are four scientists named Sheldon, Leo, Howard, and Raj, while a blonde waitress named Natasha lived next door.
Hard to believe
Apparently, the whole cast from The Theorists wasn't aware of this complete rip-off. Once they learned about the original show, the Belarus one caught the ax and made everyone a favor.
They baptized a bee after Sheldon
Six years ago, biologists discovered a new bee species in Brazil and named it the Euglossa bazinga after Sheldon's favorite catchphrase "Bazinga", the one he uses after every joke.
The scientific explanation
André Nemésio of the Universidade Federal de Uberlandia, one of the scientist behind the discovery told that "Sheldon Cooper's favorite comic word 'bazinga', used by him when tricking somebody, was here chosen to represent the character. Euglossa bazinga has tricked us for some time due to its similarity to E ignita"
Sadly they can’t meet
Despite this funny homage, Sheldon wouldn't be available to meet this bug. According to his character description, he is actually allergic to bees, so there goes the dream of the scientific community.
I’ve never seen this shows
Despite Sheldon is in too deep the whole geek universe and knows pretty much every detail from every show, comic or movie, Jim Parsons isn't quite as clued up in the cult world.
It’s fiction my friends
Parsons doesn't share any passion for those TV shows, particularly Doctor Who and Star Trek. He once told: "I'm very frank about certain things, I get asked a lot of science things and I'm like, 'you're kidding'. And even the pop culture… I've never seen Star Trek. I don't know Doctor Who."
The story behind Bazinga
Sheldon's favorite catchphrase 'bazinga' was first used in the season two finale and since then became a trademark for the show and his character. It took a silly behind the scenes prank to create this word.
Thanks to Stephen Engel
Writer Stephen Engel used the word Bazinga as in 'gotcha' in a recurring backstage gag involving an old grapefruit in the writers' room. As the word kept getting used, it eventually made its way to the actual script shortly before filming the finale.
The first three years renewal
In an act that's quite rare for US TV networks that hardly ever take a risk in the business; the show was renewed for three more seasons by CBS in 2011. They were sure the show wasn't going to let them down.
The second three years renewal
With time, the show was given another three-season renewal, eventually pushing it to at least ten seasons. This was the first time in modern TV history that a scripted series has been given this privilege.
Introducing Mayim Bialik
The characters spoke about Mayim Bialik before she was on the show. During the first season, Raj, Leonard, and Howard think of people to replace Sheldon on their physics team. Raj suggests the actress Mayim Bialik, saying: "You know who's apparently very smart, is the girl who played TV's Blossom. She got a PhD in neuroscience or something."
I’ve already worked with Mayim
Two seasons after Raj suggestion, Bialik joined the show as Amy. But one of Johnny Galecki's first roles was in Blossom as Bialik's love interest who takes her to a "make-out party". So he already knew her.
Those annoying takes
The elevator scenes are filmed on just one floor. This one you may have guessed, but the three floors of the guys' flat are actually just the same set redecorated each time. This means that for every time the characters go through the floors, the crew has to rearrange the set.
Please stop writing these scenes
For those gag scenes in which the characters go up or down stairs, the actors and crew have to recreate the scene to make each floor different each time. This, in fact, might be the reason of why those scenes decreased a little.
'Soft Kitty' is an actual song
'Soft Kitty' that kiddy song that is the only that can help Sheldon feel better when he is ill actually exists outside the show. So you might have heard it before Sheldon asked for it the first time.
Edith Newlin, the creator
The song was written in the 1930s and was titled 'Warm Kitty' by Edith Newlin. Producer Bill Prady revealed that his daughter sang 'Soft Kitty' at pre-school. Her teacher first heard it while working in Australia and taught it to the students.
That curious fan theory
The Big Bang Theory might be about the apocalypse. A video from Cracked suggested that The Big Bang Theory is secretly all about the end of the world and that Sheldon, Leonard, Raj, and Howard are the modern day equivalents of Einstein and Tesla.
So this could be the ending
Due to the intro theme that goes through history on a particular timeline, culminating with the scene on the couch, Cracked explained that the show's name is due to the fact that the big bang is expanding to the point where one day, one of the four will cause the universe to have a 'big crunch', ending the show.
They haven’t discussed it yet
However, the writers said that they have "no master plan" for how to end the show. Showrunner Steve Molaro said he thinks "it's great that some characters have barely spoken and we are seven years in," and that he is "excited about the possibilities for the future".
That thing with Howard toys
Of all the members of the show, Howard might be considered the misogynist one and probably be the last to be considered a feminist. So what happens with his bedroom and that toy collection crowded with girl characters.
A few examples
His large collection of toys is made entirely of female characters. His room includes models of Batgirl, Cheetah, Wonderman, and his only not female toy seems to be Jabba the Hutt.
Penny was originally Katie
The pilot episode didn't feature Kaley Cuoco Sweeting as Penny, in fact, it had actress Amanda Walsh as a character named Katie. Sheldon and Leonard meet her crying on the pavement after breaking up with her boyfriend.
So… no Sheldon?
The original title of the show was Lenny, Penny, and Kenny. So this means that even Sheldon was called Kenny or there wasn't a Sheldon at all, breaking the whole thing that made the show what it is.
The test audience changed history
In the first pilot, the guys would've found Katie homeless and crying, so Leonard would've invited her in to stay with them. However, Katie's tough exterior didn't sit well with test audiences, and she was replaced by Penny.
Even though he was the first to flirt with Penny at the beginning of the show, Howard is the only one of the male characters that didn't see Penny naked at some point of the story.
The lucky ones
Leonard has obviously seen her naked many times; they are a couple and supposed to be together. Raj had a short affair with Kaley Cuoco's character and Sheldon took Penny to the hospital after she fell in the shower.
The pilot had a different theme song
Our whole universe was in a hot dense state… and so on. We all know the theme tune from the Barenaked Ladies, but it was originally a completely different song in the pilot.
Thomas Dolby’s theme song
Thomas Dolby's 1980s song She Blinded Me With Science was used at the beginning. However, it had a second chance: it was later used as a short MIDI version as Howard's ringtone in 'The Lizard-Spock Expansion' episode in 2008.
Who’s Penny’s mother?
Out of all the main characters, Penny was the only one whose mother has not been introduced for a very long time. Katey Sagal was cast for playing that role since the 10th season of the show.
Who’s Sheldon’s brother?
On the other hand, Sheldon's brother hasn't been on the show despite him mentioning his sibling a few times in earlier seasons. We only met him on the spinoff series called Young Sheldon.
An own homage
Wil Wheaton appears as a recurring version of him in the show, and constantly references his role of Wesley Crusher in Star Trek: The Next Generation, the fiction that made him famous.
A pretty cool easter egg
For all those Star Trek geek fans out there the production left a pretty cool Easter egg. Will's house number in the show is the same as the hull number of the USS Enterprise: 1701.
A different Amy
Singer and actress Kate Micucci originally auditioned for Amy. However, the production felt she wasn't the right choice for playing Sheldon's weird love partner and decided not to cast her.
Her second chance
However, the producers kept her on the list for future parts, and she eventually joined the cast as Raj's timid girlfriend Lucy. It was a really uncomfortable couple that lasted a few episodes.
Sheldon's green lantern shirts
Sheldon often wears different colored shirts bearing the Lantern's logo, but each shirt also has a reason for being on that particular episode or scene of The Big Bang Theory.
One color one mood
This was probably a known fact for the Green Lantern fans, but Sheldon represents his mood choosing a color for his shirt. Red stands for rage, blue is hope, indigo is passion etc.
A not traditional work
In order to convince CBS president Les Moonves that his show worth the try, Chuck Lorre didn't present a draft with outlines of the characters and the long-term vision for the show. Instead, he wrote a complete script, hired actors, and, as Lorre explained, "put on a show".
Even Chuck Lorre hated the first pilot
In order to get picked, the show needed to film two different pilots, because CBS didn't like the first one but felt the show had potential. Chuck Lorre thought the initial pilot "sucked" but the unaired pilot is included as part of a DVD.
An awkward confusion
When Jim Parsons's agent called and said Chuck Lorre wanted him to audition for a pilot, Parsons thought he was talking about Chuck Woolery a popular TV Game host. He wasn't very excited at first.
I don’t want to be disappointed again
The creators of the show heard that lead singer of the Barenaked Ladies Ed Robertson sang a song on cosmological theory, and they thought he must write the theme song for the show. At first, Robertson wasn't sure about this because he had written some songs for TV and films only to have his work rejected.
So the Asperger might not be a real fact?
In spite of Sheldon's way of being, many viewers (Wikipedia included!) assumed that Sheldon has Asperger's syndrome. But Bill Prady has stated that "We write the character as the character. A lot of people see various things in him and make the connections. Our feeling is that Sheldon's mother never got a diagnosis, so we don't have one."
You have a thing
In order to cast the fourth member of the gang, producers wanted a foreign actor because the scientific community is cosmopolitan. So Bill Prady explained that "We saw people who were Korean and Korean-American and Latino. And then Kunal came in and it was just Person Number Eight on a day of Twenty-Seven people, and he was charming."