After filming wrapped, the cast and crew held a 100th episode party, where Dave Rogers presented a montage of "100 Moments" of The Office, with one moment from each episode.
The extras were told not to laugh or react at all to the "SlumDunder Mifflinaire" sketch, but Carell and Ryan were not told of those instructions in order to create a genuine stage fright awkwardness among the two actors; Ryan in particular was thrown off guard by their lack of response.
The episode featured about 360 extras, and was shot over the course of four days.
Jennie Tan, the creator of The Office fan site OfficeTally.com, appeared as an extra during the picnic scenes; her site had grown so large she had become known by the cast and crew of the show, who invited her to appear on the season finale.
The producers considered making the episode an hour long like other season finales from past seasons, like The Job (2007) and Goodbye, Toby (2008), but they found they did not have enough plot points to conclude and would have had trouble filling a full hour.