In the photo that Leslie receives in her Gryzzlbox, the Supreme Court Justices are sipping the Friends milkshake. Antonin Scalia is not pictured. As the episode is set in 2017, they correctly predicted that he would no longer be on the court. Scalia passed away February 13, 2016. The episode aired one year earlier and was filmed in 2014.
While at Gryzll, Leslie names Ben as "Gregor Strong" referencing Game of Thrones (2011) character "The Mountain" aka Gregor Clegane aka Robert Strong.
Dax Shepard plays The Johnny Karate Show's producer, Hank Montauk, in this episode. His wife, Kristen Bell, also appeared a season earlier as Eagleton then Pawnee councilwoman Ingrid de Forest.
Tom makes a mention of Jesse Eisenberg, actor who portrays Mark Zuckenberg in The Social Network (2010), making a connection between Gryzzl and Facebook.
Though they share no scenes, both Amy Poehler and Dax Shepard appeared in the film Baby Mama (2008), where they played common-law husband and wife.