'The Office' is easily one of the funniest shows to ever air on television. If you haven't dived into this pot of gold yet, you are in luck, because it is awaiting your arrival on Netflix! The show is a "documentary" style production that showcases the lives of a group of paper-selling office workers at a company called Dunder Mifflin.

The show, which is notorious for incorporating a lot of improvisation, has brought so much joy to our lives, so much that many of us have watched the series more than once! Whether you're a fan or not, you must admit, the cast did a spectacular job and truly sold each and every one of their parts.

Despite having seen the series a few times, there are always things that viewers miss! Here are 20 things that actually happened on the set of "The Office" that even true fans don't know!

*SPOILER ALERT* Many plotlines are revealed throughout this article, so please be cautious before reading.

40 The opening Sequence Secret

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Believe it or not, but the opening sequence to this iconic show wasn't filmed by the show's producers, but by our very own Jim! When John Krasinski found out he had been cast as Jim Halpert, he took a trip down to Scranton, Pennsylvania to learn about paper selling, and shot the footage while there. It was later used for the opening sequence for all nine seasons!

38 The Steve Carrell Problem

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In the early days of filming 'The Office', Steve Carrell has very overactive sweat glands that would cause him to sweat uncontrollably onset due to the lights. For this very reason, the set had to be kept very cool to prevent Carrel from sweating too much, which sounds like a very Michael Scott problem.

36 Dwight and Jim's Unscripted Scene

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During Season 4 in the episode titled "Money'', Dwight breaks down in the stairwell. Luckily, Jim comes to comfort Dwight with his words. If you remember the scene well, Dwight turns around to hug Jim, but he had already fled the stairwell. This was completely unscripted and planned by the director filming the scene. Dwight's reaction to Jim being gone was completely authentic!

34 Jim's First Kiss

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Although Jim kissing Pam for the first time wasn't his actual first kiss, it was, in fact, his first on-screen kiss. Jenna Fischer, the actress who plays Pam, asked John Krasinski if he had ever kissed on camera before. He lied to Jenna at the time, saying he had when really, this kiss was going to be hist very first on-camera smooch!

32 The $250,000 Proposal

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During the scene that viewers had been waiting for forever, Jim proposed to Pam at a halfway point rest stop between Scranton and New York City. Although the rest stop appeared to be real, the crew had to create a replica from scratch. This fake rest stop cost nearly $250,000, making it one of the most expensive setups for a single scene!

30 A Hospital Emergency

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During the "Beach Games" episode, things didn't go as planned and landed one of the cast-members in the emergency room. Rainn Wilson, who played the hilarious Dwight, accidentally kicked sand into the eye Leslie David Baker's character, Stanley. Baker had to be rushed to the hospital to find out he had a scratched cornea. He underwent a cleaning procedure and was back to normal shortly after.

28 The Truth Behind The Office's Screensavers

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In this hilarious episode of 'The Office' when Michael Scott fell into a koi-pond, one aspect that die-hard fans probably didn't notice was that each and every cast-member changed their desktop screen savers to fish tanks! In this shot, we can see Jim Halpert's computer screen set up as a fish tank.

26 Karen's Firing Fear

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In one episode during Karen's appearance on the show, Rashida Jones, who played Karen Filipelli, could not stop laughing at Steve Carrell's improvisations. Jones was laughing so much that production had to stop a few times. This led Jones thinking that she would actually get fired if she didn't pull it together!

24 Pam's Painting

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Pam is and forever will be our favourite receptionist/saleswoman. Although she killed at her desk, Pam was also a talented artist. She had painted the exterior of the Dunder Mifflin Scranton branch, which was later hung up on the office. One thing fans might not know is that the painting was replaced with an inspiration quote poster for most of season 6, and was later put back afterward.

22 An Improvised Kiss

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In the episode 'Gay Witch Hunt', Michael Scott shows that he is okay with colleague Oscar Martinez being gay, so much that he kisses him! Although this is public knowledge, what you might not know is that the kiss itself was not scripted. Scott kissed Martinez without anyone knowing, so the reactions you see off of the rest of the cast, are totally real!