We added the About page on the top nav (last second) but it broke the responsive layout. It's now at the bottom and we'll put it back up top when we can.
Aha, thanks for pointing this out–I was curious if there was such a thing too.
On the about page (http://teamtreehouse.com/about), why are the boxes so big for each person? I see picture, name, title, Twitter handle, and then a fair amount of whitespace that makes me think there'd be a short bio for each person.