English or foreign? I find english horror films to be...bland. Not very freighting unless you're a kid or just looking for the odd "OMG WHERE DID THAT/HE/SHE COME FROM?".

Try some foreign horror films. It's almost bed time for me...so I can't name many off the top of my head.

Original Ring saga was great (Ringu)
The original grudge was great (creepy as hell)

I know I know, they are probably the most recommended horror films, but as I said, can't really name any other off the top of my head at this time of night

If u're waiting for silent hill, Replay the games from 1-4 or those fatal frame games.