There is a review of Barnes & Noble's Nook e-book reader in the New York Times. Apparently, the "Nook" isn't ready for prime-time. Among other things, "... it's buggy."
Meanwhile I have experimented with Amazon's "Kindle for the PC." It works. I even bought one book. What I don't like is that it does not show the original page numbers of the book. So you can't quote it. This makes it pretty much useless for research. It does not allow of any cut and paste, notes or annotations either. The implementation of the latter is planned, however.