Director Robert Eggars, of the upcoming Nosferatu remake, laid out his ideal Halloween film festival for AV Club, and it's worth looking at. Some pretty good movies, largely avoiding the obvious, and spanning a solid 24 hours.
The Innocents (1961)
The Queen of Spades (1949)
Svengali (1931)
Murders in the Rue Morgue (1932)
Uncle Silas (1947)
The Body Snatcher (1945)
The Hound of the Baskervilles (1939)
The Black Room (1935)
Jane Eyre (1943)
Bedlam (1946)
Dragonwyke (1946)
The Face at the Window (1939)
Corridor of Mirrors (1948)
Sweeney Todd: The Demon Barber of Fleet Street (1936)
The Catman of Paris (1946)
Demons of the Mind (1972)
Crucible of Horror (1971)
There's several here that I haven't seen - Uncle Silas, Dragonwyke, Face at the Window, Corridor of Mirrors, Sweeney Todd, Catman of Paris, Crucible of Horror - and at least one I don't really like (Demons of the Mind, which I just reviewed this year with a middling 6/10). Also, even though Eggars included the film on his list, he points out that Rue Morgue is "not a good movie", which, for me, strong disagree. But thanks for including it, so you'll have to judge for yourself. All in all though, it's a pretty damn good set for viewing, especially focused on more gothic fare from the '30s-'40s.
You can read Eggars' thoughts on each film here.