1.Season 1 of The Office was shot in a real office building in Culver City, California. Season 2, they moved to a soundstage and recreated the original office, nailing every little detail.
7.The Office had a character named Luanne who was spotted in multiple episodes throughout three seasons, but never spoke.
8.Phyllis Smith was initially an assistant casting director for The Office, but after intriguing producers while reading lines during auditions, she was offered the role of Phyllis Vance.
9.Another fun fact about Phyllis Smith: She's a former NFL cheerleader and burlesque dancer.
10.John Krasinski shot the footage of Scranton seen in the show's opening credits.
11.Creed Bratton is a former member of the band, The Grass Roots, and he's playing a fictional version of himself on The Office...
12....and when Creed's singing karaoke in Season 3's "A Benihana Christmas," it's his own hit song, "Spinnin' N Reelin'."
13.The line "Dwight, you ignorant slut." is a reference to a line from Dan Aykroyd on SNL'sWeekend Update.
14.Steve Carell had taken a role on an NBC comedy called Come to Papa, making him unavailable for The Office. Bob Odenkirk was going to play Michael Scott, but Come to Papa was cancelled after four episodes, and Carell was available again.
15.The rest stop Jim proposes to Pam in front of was a replica built by the production team, and the shot cost a whopping $250,000.
16.The kiss between Oscar and Michael was supposed to be a hug, but Steve Carell improvised a smooch.
17.In 2007, a PC video game for The Office was released. Players are challenged to complete tasks and pull pranks.
18.When Jim signs Meredith's cast in Season 4's "Launch Party," he actually writes "John Krasinsky."
19.Jenna Fischer kept the engagement ring her character Pam was given (but she doesn't wear it IRL).
20.The flashback footage of Jim and Pam's wedding seen in Season 9's "Airplane," was actually recreated during one of the last days of shooting.
21.The Office's first season didn't get large ratings, but NBC predicted Steve Carell would be a big star following The 40-Year-Old Virgin, so they renewed the show.
