This episode features a guest appearance by Lin-Manuel Miranda as himself, in addition to series regular Leslie Odom, Jr. and minor recurring actress Phillipa Soo, both of whom would subsequently appear alongside Miranda in the Broadway musical Hamilton.
While Jimmy is on the phone with Julia, we see a poster for the musical Newsies is the background. Jeremy Jordan, who plays Jimmy, starred in Newsies on Broadway--actually leaving the show in 2012 in order to film Smash full-time.
Although they never shared the stage, Megan Hilty (Ivy) and Lindsay Mendez, who makes a cameo in this episode, both starred in Wicked on Broadway, playing the lead roles of Galinda and Elphaba, respectively.