jasonwebster

Yes, but you have to enable it. It's not on by default.

System Preferences -> Keyboard -> Keyboard Shortcuts

And change the radio at the bottom to "All controls" under Full Keyboard Access.

I'm looking forward to writing a bunch about that. I'll be drafting a series of blog posts over the next little while that will cover our choices, problems, and experience developing the app so far--and, more importantly, going forward.