There is a great contest at I Want to Read That, the 100+ followers contest. It is open internationally and the winner gets to choose around $50-60 worth of books. You need to list the books you would like to receive on the entry form so make a wish list before you enter. I know I have been dying to read Beautiful Creatures for a while now so it is definitely on my list.
You can get extra entries for any of the following:
Already a follower (+5)
Become a new follower (+1)
Add a side bar link to your blog (+1)
Tweet about the contest (+1)
Post about the contest on your blog (+5)
For more details, click on http://http//iwanttoreadthat.blogspot.com/2009/10/100-follower-contest.html.