Quoted from PanzerFreak:For Back to the Future I think movie assets are a must with actor audio, and from all 3 films. The game needs to cover the entire trilogy from start to finish. If for some reason movie assets are not possible then Stern or whoever makes it needs to still cover all 3 films. Covering only the first film would be a major mistake. A combination of custom animations and movie assets with actor would be ideal.
I have to disagree first movie only would be the best way to go as for Jaws