1) The Bad Seed, the original not the remake.
2) Double Indemnity
3) Hush Hush Sweet Charlotte (might as well save some space and say all Bette Davis since there is no one above her
4) Mildred Pierce
A few of my favorite horror films, not so old but still good:
1) The Legend of Hell House
2) The Omen, original
3) The Legacy of Maggie Walsh
4) Rocky Horror Picture Show, ok not scary but who doesn't love Tim Curry in a pair of fishnet stockings?
5) The House On Haunted Hill, remake good also, was called The Haunting
6) Anything Brad Dourif has been in
7) Anything from the 70's made in England, they make some ridiculous movies and I love them for it.
