Maybe if I spent more time obsessing over whatever _iPhone Secrets_ websites
I could find and less playing [Burnout Paradise][burnout] I would know this
already, but I did notice something new (to me) recently — at least one of
the built-in applications recognizes all four orientation values. Open up
the Photos application, view a photo, and start rotating. As long as you do
it slowly enough that it only has to do 90° turns to keep up, it will even
follow along correctly — if you make it flip straight from left-side to
right-side it will do it through right-side-up, regardless of whether that’s
what you actually did.
[burnout]: http://burnout.ea.com/