The Nook Tablet has root access. Repeat: The Nook Tablet has root access. Shouldn't be a huge surprise, given that its older brother, the Nook Color, quickly became one of the most hacked devices of the past year, but the updated version (see our hands-on) has far beefier hardware inside, and so we're all that more eager to crack it wide open.
You've got a couple of options for the procedure -- some handy executable files, or a mere eight lines in the command propt if you prefer to do things yourself. Find it all at the source link below.