Sounds like a candidate for a Ipad IMO.
This is a discussion on Replace my laptop with N1? within the Nexus One forums, part of the Google Phones category; Sounds like a candidate for a Ipad IMO....
I myself included, I have a work laptop, just recently sold my macbook, and my gaming desktop is lacking a 1200w PSU.
I have been using my N1 for most of my "computing needs" and it hasn't been a problem. (web surf, twitter, tumblr, facebook, banking, shopping)
you can read documents just fine on it, recieved via attachements in emails and so on.
I agree that creating new documents is slightly more challenging. Overall user experience on an N1 for all this "laptop" related are pretty much on point.
just my $ .02