The Iron Giant (1999)
The Iron Giant is a 1999 American animated science fiction film using both traditional animation and computer animation, produced by Warner Bros. Animation, and based on the 1968 novel The Iron Man by Ted Hughes. The film was directed by Brad Bird, scripted by Tim McCanlies, and stars Jennifer Aniston, Harry Connick, Jr., Vin Diesel, Eli Marienthal, Christopher McDonald, and John Mahoney.
More at Wikipedia.