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,
Let's Play Post Office mostel you." (Answer: Zero Mostel.) The final round had five one-line messages, with the contestants trying to identify the name of each "sender". Correct answers added $25, while wrong answers deducted $25. The high scorer after this round became champion and returned on the following episode. The set was designed like a small-town post office. The contestant podiums resembled stamp windows, while Morrow's podium resembled a street-corner mailbox and the board looked like a giant envelope. Don Morrow was always introduced as the "Postmaster of Ceremonies." Let's Play Post Office Let's Play Post Office was an American game show which