A friend of mine took a tape recorder with her and bunch of friends and stayed at the Myrtles Plantation
http://www.myrtlesplantation.com one of the most haunted places in the US.
Anyway, I am not much of a believer, but the voices heard on the tape made me change my mind. Everything from a little girl asking them to play with her, to a loud booming telling them to get out of the house. It's pretty creepy when you actually hear the voices.
That being said, I don't go around being all freaked out about ghosts or anything. But I beleive they are among us.