If you want to get your hands on a Nook Color for yourself you can go into a Barnes&Noble store and try one out. I stoped by the other day to see for myself what one looks and feels like. I also wanted to check out how online ebooks looked like from www.childrenslibrary.org . The books looked pretty good however the 7 in. screen seems to be somewhat limiting. I don’t think all my children gathered around would have a good view but it probably depends on the book. Other than the size I really like the Nook Color. The screen did have a lot of finger prints. That is understandable for a display unit but at my home it probably be covered with little childrens finger prints.
With regards to Android I have read that the nook color will get an update next year so it can access the Android market. This will make it a full fledged Android tablet. I am interested to find out if it will also be accessible with the Android AppInventor.