I'll be dusting off two classics:

"Bride of Frankenstein" is the all-time class act of horror films, and one of the greatest movies ever made. It has everything, starting with Karloff's finest performance: pathos, wicked humor, stark Expressionist sets, a first-class supporting cast...you name it.

Murnau's "Nosferatu" (1922)is the hands-down champ in the Dracula genre. None of its successors has ever matched the eeriness and the pure fright Max Schreck brought to the title role.