Tom Hanks at Sundance!

The stars are out for the indie film fest! TOM HANKS bundled up and hit the Sundance Film Festival in Park City, Utah, Friday night to support the world premiere of son COLIN HANKS ' new flick -- and ET was there! "I've been used to this guy, he's been around for about 30 years," Tom said of Colin, who brought the project to him. "He's a great guy, he's a good actor and this is really his thing." Produced by Tom's Playtone Pictures, 'The Great Buck Howard' stars Colin as a law school dropout who responds to an ad for a "Road Manager and Personal Assistant for Celebrity Performer," hoping to break into the entertainment biz. Instead, he finds himself on a cross-country tour working for Buck Howard (played by JOHN MALKOVICH ), a has-been magician who is trying to jump-start his career. Can Colin, with the help of a fiery publicist ( EMILY BLUNT of 'Charlie Wilson's War'), create the comeback of a lifetime? (link)