The show has been criticized for being too derivative of "The Simpsons," with both exemplifying a working-class family with three children. Several episodes of "The Simpsons," including "," "Treehouse of Horror XIII," and "The Italian Bob," have poked fun at "Family Guy", with the latter two implying that MacFarlane's show is guilty of plagiarism. However, both MacFarlane and "Simpsons" creator Matt Groening have said that there is no serious feud between the two of them and their shows. At the 2010 San Diego Comic-Con International on July 24, 2010, "The Simpsons" writer Matt Selman jokingly referred to MacFarlane, stating, "Come on, Seth MacFarlane does one show three times." Selman later backed away from the comment, adding, "Those shows are all really funny – they deserve to exist." The animated film "," based on Groening's show "Futurama", featured a "Family Guy" "12 Laughs A Year" calendar. In a comic book crossover between Groening's two shows, "The Simpsons / Futurama Crossover Crisis", "Family Guy" character Brian Griffin is depicted on a television in Hell.