Halloween
The plot: A psychotic murderer breaks out of the crazy house and decides to go for a killing spree around his old neighbourhood.The good: This is like the original slasher movie and it delivers on everything you would expect from it.
The bad: It's a little one dimentional, it's just pure slasher.
Conclusion: Classic movie. You can't call yourself a true horror film unless you've seen this. Of course if you're not into your horror you'll be wasting two hours of your life.