Trivia: Four of the regularly appearing secondary characters have the same first name as the actress or actor that plays her or him: Angela (Angela Kinsey), Oscar ('Oscar Nunez'), Phyllis (Phyllis Smith) and Creed (Creed Bratton).
Trivia: The address of Scranton Business Park, where the Dunder-Mifflin office is located, is 1725 Slough Avenue. The British version of "The Office" was set in Slough, England.
Trivia: Whenever you see Michael's desk it has a flag from England. This is a reference to The Office (UK), where they got the idea for The Office (US).
Trivia: There is a "Certificate for Participation" awarded to Marc Christie, which is framed and hung on the wall in the office. Christie was a best boy grip and key grip for the first two seasons of the show. The certificate still remained on the wall after he left (for example it can be seen in s04e03).
Suggested correction: Michael didn't establish the contract with Hammer-mill. Rather, he locked them up as an exclusive supplier. It's unknown if they were already selling the products to Dunder Mifflin alongside Staples and Office Max.
Wrong, Josh says they cannot sell Hammer-mill products as they are exclusive to Staples so therefore they wouldn't have been able to sell there products alongside as mentioned before until Michael made them an exclusive to them solely, Dunder Mifflin. Therefore the original mistake stands true.