Husbands & Knives
The "Husbands & Knives" episode of The Simpsons
(11/18/2007), featuring the voices of Alan Moore, Art Spiegelman, Dan Clowes and Jack Black, is available here
Moore, Spiegelman and Clowes appear as the Legion of Extraordinary Freelancers. The episode's satire on the comics industry is so effective that one wishes the final 15 minutes had kept going in this direction. But stay tuned, as the trio of alternative creators returns for a brief scene at the finale.