Best Sci-Fi Film?

[Combwork]

"Best" is dificult to define, peoples opinions differ but I'd go for "The Forbidden Planet". Yes I know, people claim it's based on The Tempest, but that's no different than claiming that "The Lord of the Rings" was based on "The Ring Cycle" which in turn was based on Nordic Legends which possibly owed their roots to people getting blind drunk for much of a very long night.

"The Forbidden Planet" has a great plot and sense of scale and like Alien, doesn't have a monster that's misunderstood, and really just wants to be loved.......