I've got a MacBook Pro, a 2007 Dell XPS, a 2004 Dell XPS and a 2000 IBM Think Pad [dated, but still works]. If I had to get rid of all, but one I'd keep the MacBook Pro. I run OS X and have XP loaded in a virtual computer if I need/want to run it as well. I keep windows around because it is ubiquitous, but I "have to" run it only once or twice a month.

The Air is a good idea that needs some more time and development. I don't need a cable ethernet [never use it now and it is available], an optical drive [there is always another computer around I can read a DVD from using wireless]. I like the metal case and that it is heading in the direction lighter and more mobile while still very functional. I'm not rushing out to buy one, but I'll be looking for a new laptop in 2009 and an Air will be on my list of models to check out for sure.

When I first saw the Air I thought..."..perfect for my bike commute to work...."