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Newt Gingrich had a run-in with
Jerry, Larry, Terry, Garry Gergich in Parks and Recreation's fifth season. He played himself, meeting the bumbling city employee when he accidentally steals Gingrich's table at a restaurant, thinking the hostess said "Gergich."
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Jon Hamm dropped by Parks and Recreation twice, appearing on the sixth and seventh seasons of the show. He played Ed, a National Parks Service employee, who also holds the title of "the most incompetent person" Leslie Knope has ever worked with.
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Josh Groban joined Parks and Recreation's final season, appearing as himself in one episode. He comes into contact with Tom and Donna during Treat Yo Self day, and is seen ordering an item named after him on the menu at a swanky Beverly Hills restaurant.
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First Lady Michelle Obama graced Parks and Recreation with her presence at the end of the show's sixth season. Obama played herself, coming to Leslie's aid as she was making a tough decision about her future.
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Bradley Whitford found himself back in the political game six years after wrapping his run as Josh Lyman on The West Wing. The actor played Councilman Pillner, a City Council member whom Leslie is hoping to replace.
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Heidi Klum joined Parks and Recreation for a two-part episode in the show's sixth season. The model played Ulee Danssen, a mayor from a small town in Denmark, who meets Leslie in London.
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R&B singer Ginuwine stopped by Pawnee for a few episodes of Parks and Rec. He played himself, appearing as Donna's cousin and performing his hit singles at the Pawnee/Eagleton Unity Concert.
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Andy Samberg joined Parks and Recreation for one episode in the show's second season. He played Carl Lorthner, a park security ranger with zero volume control.
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Rachel Dratch played Roz Pinwheel in Parks and Recreation's final season. The Saturday Night Live alum appeared as the nanny to Ben and Leslie's triplets.
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Will Forte joined Parks and Recreation as Kelly Larson, a Pawnee father who is passionate about including the Twilight books in the city's time capsule.
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Werner Herzog dropped by Parks and Recreation's final season as Keg Jeggings. He played a man who owns a house just spooky enough to entice April and Andy.
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Chris Bosh brought his basketball skills to Pawnee in the sixth season of Parks and Rec. He played himself and participated in the Pawnee-Eagleton Tip Off Classic.
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Joe Biden and Jill Biden
Vice President Joe Biden first stopped by Parks and Recreation in 2012, and he brought Second Lady Jill Biden back with him when he returned in 2015. The two Washington, D.C. fixtures played themselves, meeting Leslie to talk about her political future.
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Months before joining Brooklyn Nine-Nine as Gina Linetti, Chelsea Peretti played Zelda in one 2012 episode of Parks and Rec. Peretti wrote the episode in which she appeared.
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Kristen Bell spent three episodes on Parks and Recreation as Ingrid De Forest. The Veronica Mars alum played an Eagleton councilwoman with little respect for Pawnee.
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Dax Shepard appeared in one 2015 episode of Parks and Recreation, playing Hank Muntak in the final season. His character is a boss at the TV station that airs Johnny Karate.
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John McCain played himself in Parks and Recreation's fifth and seventh seasons. The senator was featured on the show as a part of trips Leslie took to Washington, D.C.
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Leslie found herself on one bad date in the show's second season thanks to Will Arnett's character of Chris. He played an MRI technologist who manages to get Leslie into his machine.
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After wrapping his run on Will & Grace, Sean Hayes came to Parks and Recreation for one 2012 episode. He appeared as Buddy Wood, an Indianapolis-based talk show host.
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Bo Burnham appeared in one 2014 episode of Parks and Recreation, playing Chip McCapp, a country star.
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J.K. Simmons stopped by Parks and Recreation's fifth season for a one-episode stint as Mayor Stice. He played the leader of Partridge, Minn., Ben Wyatt's hometown.
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Patton Oswalt found his way to Pawnee in the show's second season. He played Garth Blundin, a local resident with a passion for the town's history.
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Fred Armisen joined Parks and Recreation for one 2009 episode, playing Raul. His character is the vice director of the parks department in Boraqua, Venezuela, Pawnee's sister city.
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Tatiana Maslany popped up in two 2013 episodes of Parks and Recreation. She played Nadia, a doctor who has a connection with Tom.