Kwaidan (1964)--Nominated for the Best Foreign Film Oscar in 1965, Kwaidan is a stunningly beautiful series of four ghost stories. Director Kobayashi uses color and widescreen to dazzling effect, making these tales of failed marriages, vampires, clairvoyant blind people, and samurais truly haunting. Lock your door, turn out the lights, and hope that you can sleep after it's finished.
Sisters (1973)--Brian De Palma's first foray into Hitchcock Country is also one of his best. A pre-Superman Margot Kidder stars as separated Siamese twins, one of whom is a psychopathic killer. An intrepid reporter (Jennifer Salt) who witnessed one of the sister's handiwork gets involved along the way. Featuring an over-the-top score by Bernard Herrmann and the most surreal dream sequence this side of Vertigo.
Gimme Shelter (1970)--The be-all and end-all of rock documentaries shows the Stones in their prime and humanity at its worst. Filmed during the tragic Altamont concert, where hired security "guards" (the Hells Angels) stab a fan to death and beat countless others senseless (including Jefferson Airplane singer Marty Balin). Harrowing doesn't even begin to describe it, and the Stones are playing for their lives--literally.