Thanks for your thoughts JJ. My primary use will be browsing the web and secondary will be playing with it and some of the apps that have been developed. Part of the appeal of the 770 is the opensource nature of development behind it. I think the 770 will be a great device but not my perfect device - which I don't think exists yet. I'm looking forward to version 2 and more of the product and hope Nokia are avidly reading all our comments.
I can imagine Apple will be the next on the tablet pc bandwagon. They've got the marketing clout and brand awareness from the ipod to really make tablet devices a mainstream product.
I can also see myself owning two devices in the future - the 770 for a more pocketable and in car device and (hopefully... please Nokia ) a nice Nokia 880 7-10" 1024x768 device for around the home and office! One can dream!