I Own the Actual Guide to the Galaxy.
I recently ordered some covers for my nook and I absolutely love them! They were so cheap too (but kind of smelly when I first opened them). The buttons work great with the gel cover, and it's a better tactile experience and fun to hold. I'm not as paranoid about dropping it or scuffing it.
I also got tired of using my same old screen savers and wallpaper. I just found this website called nook-Look. And here is what my nook looks like now:

My Guide to the Galaxy

I am sharing just in case any other peeps have a nook and want to make it look awesome.