Vampire's Kiss (1988, Robert Bierman) - 103 min.
This movie was... strange. Yet at the same time, pretty entertaining due to the fact that Nicolas Cage goes apeshit in it (i.e. he thinks that he has become a creature of the night). Actually this movie kinda sucked, but gets two bonus points for being so ridiculously (and somewhat unintentionally) funny. Don't watch the whole thing though, it's not really worth it. Watch this instead: http://www.youtube.com/watch?v=kfcJUI39iiA
Also, I'm pretty sure that this is what Nicolas Cage is like in real life.