I ended up deciding to go with the MacBook Air. Yeah, the lack of ports is really annoying, but it's going to drop the weight of my travel bag by a full pound, double my battery life, and give me a larger screen (versus my ThinkPad X41 Tablet with the extended battery).
A friend of mine has an EeePC. Very cute. I could see using one for occasional web surfing or email reading, but I wouldn't want to do any serious typing on one. The keyboard is really cramped, but not as bad as the OLPC. You need kid fingers to properly operate that thing. I found typing on one to be incredibly difficult.
As to Apple's "Remote Disc", I'll be interested to learn more about that. I've been using Windows file sharing for the last ten years to share CDROMs and whatnot from my desktop to each of my laptops, none of which have had CDROM drives on their own. If Apple enables remote CD burning, that would be a good thing. If they enable remote CD ripping, then that's even better.