Ashton Kutcher makes an amazing Steve Jobs according to his co-star in the biopic, which will debut at the Sundance Film Festival in Utah.

Josh Gad, who portrays the late Apple boffin's business partner Steve Wozniak in the new film, insists Kutcher will blow critics away with his performance.

The actor tells Wenn, "There's something extraordinary about the material in that it's unlike anything you've seen Ashton Kutcher do before. I think he's going to astound a lot of people."