If you haven’t checked out the Nokia 770 as a potential laptop replacement, give it a thought. It’s a linux-based tablet device made by the folks at Nokia. It’s a wireless data device, and retails for $349 in the US. Here’s a great site covering lots of the details of what you can do with/to one. There’s a great article here about whether to replace your laptop for one. BargainPDA also has a great review.
This will likely be my next gear investment.