Curious George is a 2006 animated adventure comedy film based on the book series written by H. A. Rey and Margret Rey and illustrated by Alan J. Shalleck. It was directed by Matthew O'Callaghan, who replaced Jun Falkenstein. Ken Kaufman wrote the screenplay based on a story by him and Mike Werb. Ron Howard, David Kirschner, and Jon Shapiro produced. Featuring the voices of Will Ferrell, Drew Barrymore, David Cross, Eugene Levy, Joan Plowright, and Dick Van Dyke, with Frank Welker voicing the titular character, it was Imagine Entertainment's first fully animated film, as well as Universal Animation Studios' first theatrically released film.