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 6) critics as weaker than earlier seasons, despite still receiving generally favorable reviews. The season ranked fifty-second in the season ratings with an average of 7.80 million viewers per episode, marking a steep drop in the ratings from the previous season which had an average of nine million viewers. The sixth season of "The Office" aired on Thursdays at 9:00 p.m. (Eastern) in the United States. The season was released on DVD by Universal Studios Home Entertainment in a four-disc box set in the Region 1 area on September 7, 2010. The DVD set contains all 26 episodes, as well as