Jaws.

Young Renegade Untested Spielberg

The production issues forced him to take crazy chances and make amazing choices on how to tell the story ,leading to some of the finest blocking and shooting I have ever seen.

Awesome cast, great performances, amazing settings and scenery, the Orca is an awesome set.

great pacing great laughs great screams... it has everything. and by the time the shark shows up you are so invested it doesn't matter that it's "old timey" mechanical effects don't matter. you already have bought in.