It might sound strange for those who are used to old-school computing. However, this is my daughter's perception of computing:
Yes, it's a full-screen browser with a Google logo. (She made this at school without any input from me. )
If you think about how you use your computer, what applications are running most of the time, in addition to your browser? Maybe an e-mail client if you're not using web mail already? Maybe a word processor if you're not using Google Doc already? Maybe a media player if you're not consuming your media through the Flash-plugin of your browser already?
Suddenly Chrome OS is making a lot of sense huh?