I use FW target disk mode to dump files to and from my iBook all the time. I also use it with a "toaster" drive bay to sling backups (over FW800) on my quad and Sawtooth file server, and the quad also uses it for video capture (from a Canopus ADVC-300 for composite and S-video, and from my HDV Canon Vixia HV-30s). I find FW a lot more convenient than eSATA for drives that have to "move" (such as, in this case, my backup hard disks).