Producer and animator of the popular children's series Rugrats and Hey Arnold! on Nickelodeon and Dinosaur Train on PBS.
He learned stop-motion animation on his first job, which was at Will Vinton Studios in Portland. He took that knowledge to Pee Wee's Playhouse on CBS.
He based the character of Brainy on Hey Arnold! on himself.
He married Lisa Bartlett, sister of The Simpsons creator Matt Groening and the woman after whom Lisa Simpson was named.
He created the preschooler show Jim Henson's Dinosaur Train, which was picked up by PBS Kids in 2008.
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