 If you liked
Tenkuu no Shiro Laputa
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 ...then you might like
Naruto: Shippuuden Movie 2 - Kizuna
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Ok, there is almost nothing similar between Naruto and Laputa. But the thing is, that while watching this Naruto movie and seeing the scenes from the castel floating, the only thing i could think about was on one of my favorite films: Laputa.
Explosions, everything apart, something floating in the sky.
If these elements are some of the reasons for you to like Laputa, then it might be nice to watch Naruto as well, despite the significal diferences in the main plot.