As I often do I purchased this camera secondhand, from a seller on craigslist. I find this a very useful way to buy and sell camera equipment, since it gives the buyer the ability to check out the equipment and the seller a chance to get cash in hand and/or a quick sale (assuming the item is priced right). There are other sites which are also specialize in camera equipment sales (such as fredmiranda.com) and I have used these as well. This time I just happened to find a lightly-used D90 listed at a very good price, so I wasted no time.
Here is a bird photo I took last fall. It has an ideal background - fully blurred, and a nice color as well.
Main Site: Photography by Matt Schrier