Canon EOS 7D. I've wanted one of these since release, and since we're about to have a baby now is the *perfect* time.
Interestingly enough, credit card rewards through Citibank got me this camera, so it's somehow additionally gratifying - it's by no means “free” but the transaction carried some of the same feel, because I didn't spend any tangible monies here. If you have credit cards and want to earn rewards, you could check out http://www.thankyou.com, or any of the rewards-earning cards that http://mint.com can refer you to.