Mine is used as video streamer for my HTPC, music streaming for my 770, ftp server, and controls all my X-10 modules in the house through cron jobs. I've got several NSLU2 running with linux. For some reason the older ones came with the CPU clocked down to 166MHz, but it's really easy to move the CPU back to 266MHz. They are a great little workhorse for a bunch of apps and can be picked up on ebay for about $40 including shipping!