It makes me wish I hadn't stopped taking Japanese classes. Now it would be really cool to come up with your own mod of the 17" PB. On Wired.com one Japanese fellow took a Zero Halliburton case and placed the guts of an ibook inside which looked really, really cool.
(Here's the link. You'll notice it on the left side of the page with a bunch of other small pictures. http://www.wired.com/news/mac/0,2125,56085,00.html)
It would be neat to have a 17" PB placed in one of those superslim attaches... (The one they used with the HalliMac is still pretty bulky looking!) maybe throw in an additional harddrive and/or power supply? I wonder if there would even be a market for those kind of computers? Hmmm.