For those of you who are head over heels for the Twilight series, I wanted to recommend a few options.
Tanya Huff: Blood Ties series
Nancy Collins: The Sonja Blues collection
Jeanne Kalogridis: Covenant with the Vampire
I've read the Tanya Huff books and was thrilled with them. A small part of me was also tickled that they are set in Toronto, which is my own haunt. The other two series were recommended by my husband, and I will take a look at them soon, but he is a reliable source for good reading material.