I still use my N800
I'm looking to upgrade to a 7" tablet eventually
I use it for ebook reading, web browsing some (Opera is the best), as a PALM emulator (Garnet VM), and best of all it is great for portable movies. I found Format Factory is way cool for getting them down to size to play nice and smooth. People still ask me what is that, and I proudly tell them that the n800 lived long before the ipad and ipod touch! :-)
I would love to see a kindle or nook app for it tho!