J. K. Beck (aka Julie Kenner) is holding a contest to give away a copy of her new book (1st in a series) as a digital copy on an Amazon Kindle. Click the link above for instructions on how to enter the contest.
The series is called the Shadow Keepers and seems to have it all.
Here are some screen captures from the website announcing the series.
Looks like it will be the Summer 2010 before the first book comes out. I'll have to keep an eye out. These sound really good.
For other great contests which could let you win books in the urban fantasy genre, check out the blog All Things Urban Fantasy. They currently have a list of 50 different contests.
My luck is such that I can come in third in a contest with only two entrants. Maybe your luck is better!