A bunch of college kids are in a car on their way to spend the weekend camping in the creepy woods, another vehichle passes them and the kids get a glimpse of the kind of folk they might meet in the hills... a couple of massive hillbilly hicks and their bruiser of a dog, chainsaws and all in their truck. We know the set up.
Yet this turned out to be THE BEST HORROR COMEDY. After that first scene the film then shifts to Tucker and Dale's point of view, they are hardworking country types who have finally saved enough money to buy and fix up a holiday home in the hills, they are cute and lovable and when bad things happen around them they are so scared and horrified that they weep.
The pure comedic joy you get from watching ridiculous stupid misunderstandings and accidents is immense. I recommend it.