Kelley Armstrong's Bitten (http://www.amazon.co.uk/Bitten-Kelley-Armstrong/dp/1841493503/ref=sr_1_1?s=gateway&ie=UTF8&qid=1286042050&sr=8-1) series (the first few are good, though a bit angsty--I don't like the later books nearly as much)
Patricia Briggs' Moon Called (http://www.amazon.co.uk/Called-Mercy-Thompson-Patricia-Briggs/dp/1841496839/ref=ntt_at_ep_dpt_8) series
Random paranormal romance I love: Now You See Her (http://www.amazon.co.uk/Now-You-See-Linda-Howard/dp/0671034057/ref=sr_1_2?s=books&ie=UTF8&qid=1286042419&sr=1-2) by Linda Howard
a few off the top of my head
Patricia Briggs' Moon Called (http://www.amazon.co.uk/Called-Mercy-Thompson-Patricia-Briggs/dp/1841496839/ref=ntt_at_ep_dpt_8) series
Random paranormal romance I love: Now You See Her (http://www.amazon.co.uk/Now-You-See-Linda-Howard/dp/0671034057/ref=sr_1_2?s=books&ie=UTF8&qid=1286042419&sr=1-2) by Linda Howard