I have just made an application, UKTUBE. It allows you to play youtube clips on your n800 smoothly in fullscreen mode. It's total sweetness. Also, files are stored so that you can play them later on as well.

Read the blog entry, install the app and finally feel that your n800 is web 2.0 compliant (at least for the youtube part).

http://konttoristhoughts.blogspot.co...ube-files.html