In the 1990s, when animation took on a new edge, subversive wit became the order of the day, with the rise of The Simpsons, Beavis and Butthead, Ren and Stimpy and dozens more. We asked Paul Germain and Joe Ansolabehere, creators of The Rugrats on Nickleodeon, why the 90s was such a great decade for cartoon storytelling. Produced by Trey Kay.