I found something interesting this morning that might interest SD media users (like the HD1). Sans Digital has an enclosure with a battery that will use a laptop hard drive as storage for a bunch of the different card types.

http://www.sansdigital.com/MS1U.html

You have to add a laptop drive, but for around $100+, you can have 60-80GB of portable storage to offload SD cards.

Not confirming it works, but it might be something intesting to have if it does work.

you could just get an iPod Video with the camera adaptor and use it as both an iPod and a way to offload footage from your SD card(s) to a hard drive. It's worked perfectly for me. My two cents.

$100 vs $400...hmmmm

The 30GB iPod is $249 and the iPod Camera adaptor is $29. True, more money than the above option IF you have a bare HD lying around. Otherwise, this gives you one extra toy to play with ; ) And one that is also likely more portable and can be used for other things as well. But I grant you, it may not be the cheapest option around.

One of my co-workers just bought an Epson player for around $350. I think it is 40GB.