Here is a great review of the B&N Nook. This review was written by Dylan Tweney at wired.com, and provides excellent details, picture and a video.

Here is a clip from the review:

“The Nook is slightly shorter and narrower than the Amazon Kindle 2, although it’s thicker. Both e-book readers use the same E Ink technology for their main screen: a pale gray, matte surface that looks a bit like an Etch A Sketch but displays text (and monochrome images, with 16 levels of gray) in far more readable fashion than an LCD, thanks to its paperlike opacity. Instead of staring into the glowing eye of a LCD screen, you’re reading light reflected off the surface of the screen, just as you do with paper, and that’s much more comfortable. E Ink also uses less power, so battery life is long (about a week of ordinary use, B&N claims). Both the Kindle and the Nook have small, 6-inch, 600 x 800-pixel screens — only a little bigger than a 3×5 index card — but they seem bigger, thanks to the crispness of the text.”