After several of their shorts played Sundance to acclaim, David and Nathan Zellner make their feature-length debut at this year's festival with Goliath, playing Sundance as part of the Spectrum selection. David wrote, directed and starred in Goliath; Nathan produced, edited, and played a pivotal role on-camera. The Zellners spoke with Cinematical about classic pet movies like Old Yeller, the acting applications of used medical equipment, and what they have in common with their peers in the so-called 'mumblecore' movement. As David explains, Goliath starts with a very simple event: "It's about a man; his cat has gone missing, and that kind of sends him into a tailspin. ..."

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