Just finished Hounded by Kevin Hearne. I've been trying other urban fantasies, while I wait for the next Jim Butcher novel. I haven't found anything worthy until now. I really enjoyed this book, and the Celtic mythology. I don't know enough about Celtic mythology to know if it's factual or not, but since this is fantasy, it works for me.
This is an author, who is newly published in 2011. They published his first three novels in the series.
I ran right out and picked up the next one, Hexed, today.