"Deliverance" is one of the best exploitation films to come out of that wonderful 1970's decade from whence so many other exploitation films came.
A group of friends sets out on a canoe trip down a river in the south and they become victimized by a bunch of toothless hillbillies who pretty much try to ruin their lives. It's awesome.
We are treated to anal rape, vicious beatings, bow and arrow killings, shootings, broken bones, etc... A lot like 1974's "Texas Chainsaw Massacre," to say that "Deliverance" is believable would be immature. This would never and could never happen, even in the dark ages of 1972.
"Deliverance" is a very entertaining ride and packed full of action. It is one in a huge pile of exploitation films to come from the early 70's and it (arguably) sits on top of that pile with it's great acting, superb cinematography and excellent writing.
8 out of 10, kids.