Eye-Fi
/me just discovered the Eye-Fi SD Card
Basically it's an SD card that has a wireless interface device built into it that communicates with a dongle that doubles as a card reader. You can map the dongle to a folder on your computer, or point it to a web service like Flickr, and when the camera with the card in it comes in range of the dongle it wirelessly transmits the photos off the camera to wherever you mapped the dongle. This effectively eliminates several of the steps for handling pictures, which is useful if you use your camera every day.
People have been reporting that it even works in linux under Wine, which is awesome. I currently have a 1GB SD card, and never fully utilize it, so this being 2GB makes it ideal for my purposes. However, since I already have a fully functional camera and memory card, I can't justify spending the money on it. Definitely going on my wish list, though.