Nosferatu (1922)
This is the oldest film that I own. Some years ago, I bought the restored Collector's Edition DVD of the film, and I watched it again last night. It may be an extremely old film, which some may scoff at, but it is still an extremely atmospheric and creepy experience. It was one of the very first (though unofficial) films based on the novel Dracula, and Max Schreck, who plays the vampire, is a very different image of him than the suave, man-about-town as later portrayed by Bela Lugosi and Christopher Lee. Schreck oozes evil from every pore of his body, and there is absolutely no way that any lady would find him irresistible, unlike Lugosi and Lee. There were even unproved rumours that Schreck was, in fact, a real vampire, due to his appearance and mannerisms.
It had been a few years since I watched this film. I watched it fairly late, with headphones plugged in to my DVD player, and it still creeped me out. The film has no speech (it was made in 1922), but with atmosphere like that, you don't really miss it. I consider it to be one of the finest vampire (Dracula) films ever made. It's a solid 10/10 from me for this vintage horror classic. I hope that it won't be a few years before I watch it again.