I think I've seen this before

Vampires have always been a common theme in entertainment. Books, movies, and television all use them as characters in one way or another. Whedon first created Buffy, and it was a huge success. Then, after season four, came Angel's own series, Angel. Both shows dealt with the main threat to the world being vampires. Because these two shows were popular, vampires became popular, but with the dying out of the shows, so too the vampire interest died out. However, recently Twilight has brought to life the vampire craze again. Buffy and Twilight have a very similar idea, the big strong vampire with the supernatural powers and his forbidden love who is not a vampire. This ties in with Angel as well because he is the vampire love interest in Buffy. There are many other similarities between Buffy/Angel and Twilight which are as follows: vampires come after both Buffy and Bella and they have to be protected by a good vampire, Angel and Edward both choose not to drink human's blood, both towns are filled with the supernatural, and both Edward and Angel leave their loves because they know that they are better off apart. Why these stories become so popular, I'm not quite sure, but it could be the attractive male leads they choose to play the good vampire or the entertaining story lines. Whatever it is, vampires have been and still are very popular, especially to teenage girls.