Steamboy

...Katsuhiro Otomo's animated feature has a nifty machine-monster...

During the birth of the steam age, a young inventor must avoid letting his grandfather's invention, a powerful new source of energy, from falling into the wrong hands.

...British steam train enthusiasts should find it an irresistible curiosity.

The story follows three generations of a British family involved in a technological breakthrough involving steam, which the movie considers the 19th-century equivalent of nuclear power.

..a familiar animé parable about the pitfalls of scientific progress and the tenuous alliance between man and machine