"Stairmageddon" is the nineteenth episode of the ninth season of the American comedy television series The Office. It originally aired on NBC on April 11, 2013. The episode features guest appearances from Roseanne Barr as Andy's agent Carla Fern and Paul Feig as a man auditioning his act for Carla.

The series—presented as if it were a real documentary—depicts the everyday lives of office employees in the Scranton, Pennsylvania, branch of the fictional Dunder Mifflin Paper Company. In the episode, the office workers are forced to walk up the stairs while the elevator is being serviced. Dwight Schrute (Rainn Wilson) kidnaps Stanley Hudson (Leslie David Baker) to assist in an important sales call. Pam Halpert (Jenna Fischer) and Jim Halpert (John Krasinski) talk with Nellie Bertram (Catherine Tate) and Toby Flenderson (Paul Lieberstein) about marital troubles. Meanwhile, Angela Lipton (Angela Kinsey) supports her husband during a press conference.

"Stairmageddon" received mixed reviews from television critics. The episode was viewed by 3.84 million viewers and received a 1.9/5 percent among adults between the ages of 18 and 49. The episode ranked second in its timeslot and The Office was the highest-rated NBC series of the night.

Everyone in the office grows anxious as the premiere of the PBS TV documentary The Office: An American Workplace draws near. Andy Bernard combines an unflattering appraisal of himself from an early newspaper review of the program and his blunt self-assessment that he is unlikely to remain employed at Dunder Mifflin for very long after it airs, and decides it is time to pursue his dreams of stardom. After many fruitless calls to dismissive talent agencies, he finds himself at the dual talent agency/real estate office run by Carla Fern. Carla agrees to represent Andy, who is thrilled that he only has to pay $5,000 for the privilege.

The office workers are forced to use the stairs while the elevator is being serviced, a situation everyone deems "Stairmageddon". The out-of-shape Stanley Hudson undergoes a painful struggle in climbing the stairs, only to be greeted at the top by Dwight Schrute ordering him to take part in an important sales call. Unwilling to climb the stairs a second time, Stanley refuses. Since the client is a friend of Stanley's sister, Dwight (who is operating without concern for niceties now that the documentary has driven home the point that he will never be the branch manager at Dunder Mifflin) cannot take no for an answer, so after getting Andy's permission to bring Stanley through "whatever means possible," he shoots Stanley with bull tranquilizers. With help from Clark Green, Dwight gets Stanley to the car, injuring him various times in the process. The tranquilizers inexplicably make Stanley intoxicated, and his unusually jolly mood helps them close the sale. When Stanley regains full awareness, he is pleased to learn that he made a sale with no effort whatsoever, but still refuses to take the stairs again. He instead knocks himself out with one of Dwight's darts, leaving Dwight and Clark to figure out how to get him back upstairs.

Jim Halpert talks with Toby Flenderson about his going to marriage counseling with Pam Halpert, and Pam does the same with Nellie Bertram. Toby tells Jim that it is not fair to tell Pam that he needs an indeterminate amount of time before Athlead pays off for the family; Pam vents to Nellie that Jim is always making unilateral decisions involving her and they each agree they are not leaving Philly for Scranton or vice versa. At the end of the day, Nellie and Toby both complain to each other about how exhausting Jim and Pam are, while the Halperts leave the office looking sad and awkward together.

Angela Lipton agrees to be the supportive "good wife" for her state senator husband Robert at a press conference in the aftermath of the documentary's reveal of his affair with Oscar Martinez. Angela assumes this means he intends to deny the affair and reassert his devotion to family values. Instead, Robert tells the press that he is gay and further humiliates Angela by insinuating that his relations with her drove him to homosexuality. Oscar is also dumbstruck when Robert, while openly proclaiming his affair with Oscar, says that he is in love with his chief of staff, Wesley Silver. Kevin Malone happily gloats to the office staff about his keeping Oscar's secret to the very end, and is immensely relieved that he doesn't have to keep it secret anymore.

"Stairmageddon" was written by executive producer Dan Sterling, his second writing credit for the series after the ninth season entry, "The Boat". It was directed by series cinematographer Matt Sohn, his eighth directorial effort for the series, following the ninth season entry, "Suit Warehouse". Comedian Roseanne Barr guest stars in this episode. It was announced on January 31, 2013, that she would be doing a two episode arc and would play a talent agent named Carla Fern. Barr began filming her scenes the week following January 31. Director Paul Feig also guest stars in the episode, his first time appearing in the series. He previously directed several episodes of the series, with his last entry being "Goodbye, Michael" in season seven.