Looks like LG is jumping on the portable hard drive bandwagon with their new line of XD3 Slims. These trim hard drives measure just 13mm thin and sport rubber-padded sides for impact protection. They connect by your USB 2.0 port, but the XD3 Slim can also connect using SATA II.
Storage capacity maxes out at 500GB. The 320GB model should arrive in Europe and North America for about $90 later this year. They look pretty good. We really like the brushed aluminum finish.