I'm showing my age here, but I saw Jaws the summer it came out. I was twenty. Yeah, I'm old!
I went with my mother and some friends to an old theatre in Portland, Maine. We sat in the first row of the balcony and I vividly remember the entire audience jumping and yelling the first time the shark came out of the water.

There was a guy sitting next to me and I remember him literally jumping out of his seat.
The movie scared the heck out of all of us, especially because we lived in a coastal town and always spent summers on the beach. Jaws has always been one of my favorite movies and my own kids grew up loving it, too. I watch it at least once every summer.