I got an EyeFi SD card with the capability to upload to MobileMe automatically (others are included, too, like Facebook or Snapfish), and it’s GREAT!
I take pictures.
I come home and make sure the iMac is on.
I turn on the camera.
The SD Card uploads the pictures.
If I pay for it, I can get geotagging and uploads remotely from hotspots around the country. I might do that (the remote uploads) before our trip in July.
I have to say, it’s pretty cool.