Playing with Chrome OS
I have to say that even in its alpha (or beta?) version, Chrome OS looks good. I like the home "apps page" and except for not having an application that is a terminal emulator, it is fairly complete: my calendar, google docs, etc., are all available, and web browsing is fast.
Again, given a good terminal program for use cases where I need to quickly SSH to a server, I can see a light weight and low power netbook nicely augmenting my laptop + external monitor setup.