I love the fact that I can hear about a book from friends or while listening to NPR, grab my Nook and put er in my queue.
The last five I downloaded:
Anais Nin - Little Birds
Chelsea Handler - Chelsea Chelsea Bang Bang
Stuart Neville - The Ghosts of Belfast
Vladimir Nabokov - Lolita
Noah Boyd - Agent X
So far, I've read Little Birds, Agent X, and I am working on The Ghosts of Belfast