Robert Thomas Letterman (born October 31, 1970) is an American film director and screenwriter who started with animation and moved on to live-action.
He is known for directing Monsters vs. Aliens (2009) and co-directing Shark Tale (2004); he received a nomination for the Annie Award for Writing in a Feature Production on the latter.
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 direct