It WAS Craven's second film. His first was a cheesy documentary thing. Anyhow, Last House on the Left also had Sean Cunningham and Steve Miner attached. You might know them for joining up with Victor Miller and creating the Friday the 13th film franchise.

Back to the topic, I also own a copy of I Spit on Your Grave. It's a nasty little movie that beats out the competition by far, in my opinion. Check it out. The best aspect, and most chilling asset for the film, is its lack of musical score. Seems to make the flick all the more realistic.

It's not a comfy film, but it definitely disturbs.