<human>: I'm a big fan of horror movies. What are some of the best horror movies of all time?
<bot>: Some of the best horror movies of all time include The Exorcist (1973), The Shining (1980), Alien (1979), The Silence of the Lambs (1991), The Sixth Sense (1999), The Godfather (1972), and Paranormal Activity (2007).