Ah... now I know why I saw it on TV all the time.
http://mentalfloss.com/article/78749...out-iron-giant10. IT GAINED A CULT FOLLOWING AFTER IT LEFT THEATERS.
By the time Warner Bros. realized they had something special on their hands with The Iron Giant, it already was too late. The film was criminally under-marketed and performed poorly at the box office as a result. The studio had learned its lesson when it came time to promote the movie’s home video release. They partnered with big-name brands like General Motors, Honey Nut Cheerios, and AOL, and even distributed $2 off coupons at screenings of Pokémon: The First Movie. Then in 2000, the rights to the film were sold to Cartoon Network and TNT. Cartoon Network started airing Iron Giantmarathons on Independence Day and Thanksgiving, and as more children (and adults) were introduced to the film it eventually gained a devoted fanbase.