So far my computer setup will be a Fujitsu P1610 with 1 GB RAM and a 80 GB HD mounted to a RAM tablet mount on the doghouse. I plan to use a DC adaptor for power and will be using it with a Novatel USB Sprint modem for internet, email, Slingbox, and GPS navigation with Microsoft Streets and Trips '07.
Thought about going with a Macbook but once I received the small tablet laptop, I was sold. Here's a pic of the size difference compared to my work Dell. There's no optical drive or mouse pad but those are things I have been able to overlook so far. Pic of the RAM tablet mount as well. $40 from the RAM site.
I've listed my other new p1610 with 512 MB of RAM and 30 GB of memory in the classifieds section. Needed more storage for my tunes!