What is Robert Zemeckis famous for?

Robert Zemeckis is an American screenwriter, producer and director. Zemeckis hit it big and became well known in the 1980's as the director of the Back to the Future films. In 1988 he was part of another big hit with Who Framed Roger Rabbit. Some of his other films include Forrest Gump, The Polar Express, Beowulf and A Christmas Carol.