I used the iPad Camera Connection Kit to copy to photos off the camera and then used the handy free iPad app called PhotoPad. This app let's you do a handful of image edits, including cropping. And for free, you can't beat the price.
This is good news for when I'd like to travel and take higher quality photos than my iPhone allows and upload them remotely, but don't want to also take along a laptop. It's now easy for me to sort through the D200 photos, edit them, and upload some to my blog, all without a full computer.
(This post was also made from my iPad. I snapped the photo using my iPhone and then used the Camera Connection Kit to transfer the photo from iPhone to iPad. I could have just posted this from my iPhone, but the larger keyboard on the iPad makes for faster typing.)