In 2004, the live-action film "Sky Captain and the World of Tomorrow" was released. It was notable for being filmed entirely in front of a bluescreen, with the background being completely computer-generated; only the actors and some props were real. Robert Zemeckis' film "The Polar Express", starring Tom Hanks in five roles, was completely CGI animation but used performance capture technology to animate the characters. Zemeckis followed "The Polar Express" with two other motion capture films: "Beowulf" and Disney's "A Christmas Carol".