when was it released?
July 31, 1999
The Iron Giant
The Iron Giant" premiered at Mann's Chinese Theater in Los Angeles on July 31, 1999, and was released worldwide on August 6. 
who does vin diesel play in the iron giant Titular character is this a movie or a tv series? American animated science fiction action film
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The Iron Giant [SEP] Introduction
Michael Kamen composed the film's score, which was performed by the Czech Philharmonic. "The Iron Giant" premiered at Mann's Chinese Theater in Los Angeles on July 31, 1999, and was released worldwide on August 6. The film significantly under-performed at the box office, grossing $31.3 million worldwide against a production budget of $50 million, which was blamed on Warner Bros.' unusually poor marketing campaign and skepticism towards animated film production following the mixed critical reception and box office failure of "Quest for Camelot" in the preceding year. Despite this, the film was praised for its story, animation, characters, the portrayal of the title character and the voice performances of Aniston, Connick Jr., Diesel, Mahoney, Marienthal and McDonald.