Whistleblower (The Office) fourth appearance on the show, after first appearing in "Sabre". Zach Woods made his ninth appearance on the show. While talking with his real estate agent on his cellphone, Dwight states that the office park is 1725 Slough Avenue. "Slough" is a reference to the UK edition of "The Office" which is set in Slough, United Kingdom. In its original American broadcast, "Whistleblower" was viewed by an estimated 6.60 million viewers with a 3.4 rating/10% share in the 18–49 demographic coming second in its timeslot after the season finale of "Grey's Anatomy", receiving the same rating as last week's episode,
The Office (U.S. season 2) directed episodes during season one, while Dennie Gordon, Paul Feig, Victor Nelli, Jr., and Charles McDougall each made their directorial debut for the show. While "The Office" was mainly filmed on a studio set at Valley Center Studios in Van Nuys, California, the city of Scranton, Pennsylvania, where the show is set, was also used for shots of the opening theme. Despite low ratings from the first season of the show, NBC renewed "The Office" for a second season. Originally, six episodes were ordered, but NBC later ordered an additional seven. In early November, NBC again expanded the season by