Being able to swap back and forth between Chrome OS and crouton at runtime has been great.
Difficulty resolving display settings for a cranky old projector under linux? No problem under Chrome OS.
Linux temporarily horked by an update, but I really need to check email? No problem.
I haven't needed to configure any linux wireless settings on the laptop either, as it operates through a crouton interface.
Want to let someone borrow your computer? Chrome OS is an instantly-understood interface.
Want to hit instead of ? Use the windows key as an unmapped personal key? Well, you can't have everything in life.
Battery life has been great, and the in-flight wireless deal that came with the Chromebook has pretty much offset the laptop's cost.
Thank you, Crouton devs. You've made my life better.