Rob Letterman is an American film director who started with animation and moved on to live-action.
Before Letterman's film subjects took him into outer space with Monsters vs. Aliens, he was taken underwater, having co-directed and co-written Shark Tale. His writing efforts on the film also earned him an Annie nomination.
Prior to Letterman's joining DreamWorks Animation, he directed the short film Los Gringos, which was accepted at 2000's Sundance Film Festival.
In 2010 Letterman directed the live-action film Gulliver's Travels, starring Jack Black in the lead role.