Ratings
In its original American broadcast on February 1, 2009, "Stress Relief" was viewed by 22.9 million viewers in 13.34 million homes, according to Nielsen Media Research, making it the most watched episode of The Office and the only episode to reach over 20 million viewers. The episode drew a 10.6 rating and 14.46 million viewers between the ages 18 and 49. It more than doubled the show's previously highest rating in the age group, and constituted the largest 18-49 rating for an NBC entertainment telecast in four-and-a-half years, since the tenth season finale of the medical drama series ER on May 13, 2004. An estimated 37.7 million viewers watched at least six minutes or more of "Stress Relief". As expected, The Office benefited highly from following the broadcast of Super Bowl XLIII, which was seen by 98.7 million average viewers, making it the most watched Super Bowl in history at the time.
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