1. Many of the cast’s characteristics were intentionally incorporated into the character’s personalities throughout the series.
2. In “Money”, when Jim is consoling a crying Dwight on the staircase, the moment where Dwight reaches out to Jim before realising he’s gone was not scripted but was coordinated by the director.
3. Apparently Creed Bratton is the actor most similar to his character, Creed Bratton.
4. The theme song plays during the end credits only after Season 4 begins. All previous seasons have no music during the end credits.
5. John Krasinski shot the footage of Scranton for the opening credits after he found out he was cast as Jim. He visited Scranton for research and interviewed employees at actual paper companies.
6. Phyllis Smith was originally a casting associate for the show but the producers liked her so much they created the role of Phyllis Vance for her.
7. The crew built a replica of a rest stop for Jim and Pam’s proposal scene. The shot ended up costing $260,000, which the producer described as “the most expensive and elaborate shot we’ve ever done, but it’s also sort of the highlight of five years of storytelling”
8. Carell is married to actor Nancy Ellen Carell, who played Carol Stills in several episodes of the show.
9. Smith is 11 years older than Steve Carell, despite many references indicating their characters are supposed to be the same age.
10. Jim and Pam’s first kiss was John Krasinski’s first ever onscreen kiss, about which he may have lied to Jenna Fischer when she asked if he’d ever done it before.
11. B.J. Novak and John Krasinski also attended the same high school, and played little league together.
12. When the Stamford branch and Scranton branch merged, the idea was to eventually alienate, fire, or cause all of the Stamford character’s to quit, but Ed Helms was so funny they decided to convert him into a series regular.
13. Production once had to be shut down when Krasinski and Wilson couldn’t stop laughing at the birthday party scene in “Lecture Circuit” when Dwight hangs grey and brown balloons and a banner that says “it is your birthday”.
14. Brian Baumgartner (Kevin) and Ed Helms (Andy) attended the same high school.
15. Novak was the first person to be cast. He was also hired as a writer, starting the tradition of writer-performers wherein many of the writers would star in the show and many of the actors would contribute to writing.
16. Spinoffs were planned for both Andy and Dwight to get their own shows but eventually fell through.
17. Rainn Wilson begged for Katee Sackhoff from Battlestar Galactica to be cast as Dwight’s ex-girlfriend.
18. The showrunners didn’t tell network executives that Steve Carell would be in the finale. They kept it secret until the episode aired and gave Michael’s lines to Creed in the table read.
19. Mindy Kaling used to make up lies about their coworkers to mess with B.J. Novak. She once convinced him that showrunner Greg Daniels used to date one of the show’s actresses when they were in college, making Novak afraid to give proper criticisms during edits in fear of insulting Daniels’ ex.
20. The original name for the show was The American Workplace. The documentary version of the show that comes out in the final is season is named The Office: An American Workplace as an homage.
21. Brian Baumgartner, John Krasinski, Rainn Wilson, and various crew members had a fantasy football league that lasted six of the nine seasons. Wilson won just once.
22. Timothy Olyphant’s recurring character Danny Cordray is named after Randy Cordray, one of the show’s producers.
23. Amy Adams was a relatively unknown actor when she played “purse girl” in “Hot Girl” – no one could’ve guessed how big she’d become in the coming years.
24. Krasinski had to cut his hair for the film Leatherheads, so he was forced to wear a wig for the last six episodes of Season 3 of The Office.
25. During Season 8, Jenna Fischer was actually pregnant. Pam’s pregnancy was already planned for the season but it wasn’t intended that Fischer’s actual pregnancy would coincide.
26. Steve Carell didn’t watch the UK version of The Office beforehand, wishing to avoid having the inclination to simply imitate Ricky Gervais’ version of the character.
29. Brian Baumgartner (Kevin) and Ed Helms (Andy) attended the same high school.
30. B.J. Novak and John Krasinski also attended the same high school, and played little league together.
31. Novak was the first person to be cast. He was also hired as a writer, starting the tradition of writer-performers wherein many of the writers would star in the show and many of the actors would contribute to writing.
32. When the Stamford branch and Scranton branch merged, the idea was to eventually alienate, fire, or cause all of the Stamford character’s to quit, but Ed Helms was so funny they decided to convert him into a series regular.
33. Krasinski and Rainn Wilson would give each other tips during Jim and Dwight’s quarrel scenes, and many of their best improv lines and directives came from the other.
34. Production once had to be shut down when Krasinski and Wilson couldn’t stop laughing at the birthday party scene in Lecture Circuit” when Dwight hangs grey and brown balloons and a banner that says it is your birthday.
35. Steve Carell, John Krasinski, Jenna Fischer, and Wilson all went for lunch after they were initially cast and discussed their prediction that this show had the possibility to go on for eight years.
36. Oscar Nunez, who plays Oscar Martinez, didn’t think the show would be a success, so kept his jobs as a server and a babysitter when he first got the role.
37. At this early lunch Carell said, “Of all the roles I’ll end up doing and all the films I may shoot, I believe that Michael Scott may be the role I’ll always be most known for.”
38. After Michael fell into a Koi Pond at a sales call, many of the employees changed the screensavers on their computers to fish tanks.
39. Charles Miner mentions in Season 5 that he previously worked at Saticoy Steel. This is a reference to the actual filming location of the show in Los Angeles, which is in Saticoy Street.
40. Spinoffs were planned for both Andy and Dwight to get their own shows but eventually fell through.