Marx Brothers appeared, sometimes with Chico and Zeppo caricatured, in cartoons starring Mickey Mouse, Flip the Frog and others. In the "Airwolf" episode 'Condemned', four anti-virus formulae for a deadly plague were named after the four Marx Brothers. In "All in the Family", Rob Reiner often did imitations of Groucho, and Sally Struthers dressed as Harpo in one episode in which she (as Gloria Stivic) and Rob (as Mike Stivic) were going to a Marx Brothers film festival, with Reiner dressing as Groucho. Gabe Kaplan did many Groucho imitations on his sit-com "Welcome Back, Kotter" and Robert Hegyes sometimes imitated both Chico
Groucho Marx way. As the Marx Brothers, he and his brothers starred in a series of popular stage shows and movies. Their first movie was a silent film made in 1921 that was never released, and is believed to have been destroyed at the time. A decade later, the team made two of their Broadway hits—"The Cocoanuts" and "Animal Crackers"—into movies. Other successful films were "Monkey Business", "Horse Feathers", "Duck Soup", and "A Night at the Opera". One quip from Marx concerned his response to Sam Wood, the director of "A Night at the Opera". Furious with the Marx Brothers' ad-libs and