1: Jaws (1975)

1: Jaws (1975) - Smile, you son of a bitch.
According to an interview with Richard Dreyfus at thesharkisstillworking.com, Steven Spielberg was not actually present for the scene of the shark's destruction in Jaws, as he had heard the crew were planning to dump him in the water when he called wrap on the movie (apparently the director thereby began a tradition where he is not present during the shooting of the final scene of any of his movies).

Explosives expert Richard S. Edwards had to crawl into the shark maquette in order to place the requisite dynamite that blew it up. The picture taken of him at that point remains with the Woods Hole Oceanographic Institution where Edwards worked after his time in the Navy.

Impact: Though it's unlikely that a tank of compressed oxygen would go up with quite the semi-nuclear force depicted, audiences had been through the mill with this movie and had really earned this reward. Arguably THE cheer moment of the 1970s, explosive or otherwise.

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