I have one too. I love it.

I was blown away when I was able to write some technical specifications in emacs, render them to PDF and share them to the device, then go for a coffee and review my work. I can markup my documents, sync them back to my machine, etc.

I do wish the resolutions of the documents on my desktop were better. I've drafted presentations on the device while thinking. I vastly prefer paper for thinking. This device is perfect for that.

I just wish I could do more with it. I want to be able to hook up a cloud service to interpret my math hand-writing, run it on my theorem prover or checker, and return the results, etc.... much like what people were doing in Xerox Parc ages ago.

There's so much potential here.