3 Silence of the Lambs 
Another movie that's more of a drama than a pure horror film, Silence of the Lambs introduced one of the most insidious villains [Hannibal Lecter] to ever grace the silver screen...and he's not even the bad guy in this film!
Virtuoso performances by Jodie Foster, Anthony Hopkins, and Ted Levine [Buffalo Bill] make this one of the scariest films of all time. Hearing "...it rubs the lotion on its skin, or else it gets the hose again" still gives me goose bumps.
Silence of the Lambs