So, maybe I'm the last guy on the planet to do this, but I finally broke down and bought a Kindle (Kindle Touch for $99), and wow.. this is pretty cool. I'd been reading eBooks with the Kindle and Nook apps on my Smartphone and PC, but with the Kindle I get an @kindle email address and can now check out eBooks from the Public Library! For Free! Same with music.
Check it out for 7 or 14 days, read or listen to it (up to 10 items) and goes away when its time to check it in. They support all sorts of eReader formats, I just preferred the Kindle.
Pretty cool.