There's a brief review of the N900 over on Linux Journal, in anticipation of a full-blown review to come in the magazine:

The Nokia N900 has just started shipping and there are already a number of reviews of the device out on the net. I've had the opportunity evaluate a pre-release N900 for a few weeks now, and while you can expect a full review in an upcoming issue of Linux Journal, I wanted to give you a quick look into what the N900 is like from the perspective of your average Linux geek.

http://www.linuxjournal.com/content/...900-first-look