Agree with you Matt. Check out the google docs promo vids they used during day 2 of Google IO.

(wow this was painful to find)

http://www.youtube.com/watch?v=tPtJd6AzU8c&feature=youtu...

That style of fun product demonstration would be perfect for this type of app.

Also google docs now work offline really well and across multiple devices, which is incredibly useful.