While searching through Apple's Knowledge Base for something totally unrelated, I came across article 106523, titled Cameras and Devices Compatible With Image Capture. This was published just yesterday, and contains a list of cameras and card readers which work with Image Capture. So if you're thinking of buying a new camera, take a look at the list and see if anything you are considering is on the supported list of devices.
Mac OS X Hints
http://hints.macworld.com/article.php?story=20011011095632250