DuracellEnergizer said:

Deliverance (1972)

With the way everybody talks about this movie, I was expecting something almost on the level of The Shawshank Redemption. All I really got, though, was a slightly above average movie. I guess Ned Beatty squealing like a pig is tremendously memorable. *shrug*

B-

It was pretty shocking for audiences back in the 70's. Well into the 80's it was severely edited for tv, leaving most of what happens in a certain scene a mystery if you've never seen it uncut. I'm not certain you could even get away with that in a movie today.

It's also pretty much ingrained into the popular culture. (And probably cemented the reputation of inbred backwoods folks forever.) Several years back, there was a truck commercial where these guys are in the woods, having a good time. When they hear Dueling Banjos coming out of the forest, they freak and set a new speed record for getting the hell out of there. Not ending up like Ned Beatty's character was a selling point.