Mark of The Vampire (1935)

Directed by Tod Browning

By my estimation, one of only four times Bela Lugosi would play a vampire was in this very silly spooks-and-scares comedy.  It's a remake of a lost silent film called London After Midnight that starred Lon Chaney.  All around fairly entertaining.  Also I have to say, the bat prop they use in this movie is incredibly well done. It looks better than any of the ones used in the Dracula movies

Vampyr (1932)

Directed by Carl Th. Dreyer

Mildly eery, glacially slow vampire movie.  Largely uninteresting and forgettable.  Nosferatu (1922) is a much more interesting alternative to this vampire story.