Pros: Very light. Boots quick (15 seconds). On HD restore (if you really goof up the software). Easy to configure wireless for WEP or WPA-PSK.
Cons: Asus software support is nearly non-existent. The OS is a slightly hacked up version of the latest Xandros (4.0). No WPA-EAP (Enterprise) wireless support with the default software (need to install a different OS for this support.. Linux/Windows).
Overall Review: The best software/hardware support can be found at www.eeeuser.com (good forums, wiki). It takes a bit to get used to the small keyboard and screen... but you do!
Comments: I use this for my acrobat presentations, using the prosper class for LaTex. With Fedora Core 2/3, the IR receiver (USB) works as soon as you plug it in.
Pros: Very large screen. Sound system is great. Lots of disk space. Some Linux compatibility... enough to get you running and online.
Cons: The Harddrive was initially partitioned into two nearly equal 250GB drives. A bit annoying, since Vista didn't want to shrink to main one any smaller. Some annoying Acer bloatware (Vista)... takes ~30minutes to remove. PgUp/PgDn/Home/End keys are in strange location.. takes some getting used to. It's a little heavier than my previous laptop (17in screen). Not completely working out of the Box with Linux (Fedora 10... see other thoughts, below).
Overall Review: After removing the bloatware from Vista... threw in my Fedora 10 Live CD. In Fedora 10: Network (wireless and wired) works right away. Screen resolution is to max with the default xorg video drivers (better acceleration with the proprietary nvidia drivers). Keyboard response is a bit sluggish (works fine in Vista). Audio drivers need some simple tweaking to get it working (google it).