Seanan McGuire is a new author who I've really been enjoying. Her first book, Rosemary and Rue was published September 2009. She was awarded the John W. Campbell Award for Best New Writer by the 2010 World Science Fiction Convention. Her first series (up to book 5 now) is about a character called October Daye. In this urban fantasy universe the different types of fae beings may decide to pass as humans, take a human lover and have mixed species children. When the children figure out that that mom or dad really is different the children are given the changeling's choice. They may go to faerie and leave their human life and parent behind forever or stay human, forget and live out their mortal life with their human parent. Either way, the changeling loses one parent and the human parent is left wondering why they're suddenly bereft of a partner.
October Daye was still quite young when she had to make the choice and in crying out for her fae mother left her human father behind forever. Now a part of the fae world, where changelings are very distinctly second class citizens, October has to make her own way. She tries to hide in the human world at first but is forced deeper into fae when an important countess is murdered. The dead countess binds October to investigate, forcing her to resume her position in Faerie.
Seanan McGuire, writing as Mira Grant, has also started a zombie urban fantasy series which isn't to my tastes but got to the final ballot for the 2011 Hugo Award for Best Novel. That's actually pretty impressive for someone that's only been published for 2 years. The first book in the Newsflesh series is Feed. I'm also really looking forward to the first book in her new series Discount Armageddon: An Incryptid Novel.