This is taken from a hands-on of the Motorola BACKFLIP from SlashGear. They say that the form-factor is quite unique and has both merits and demerits.
While the form-factor enables you to use the phone as a clock, video player etc without a Dock. But due to the form-factor, Motorola were forced to make it rugged since the QWERTY keyboard remains exposed when the phone is closed. The keys are large but are tough to press.
Motorola BACKFLIP has the rear mounted trackpad known as the BACKTRACK. Build quality is quite good and once you open the flip in the 45 degree mode, the phone goes into the media station mode automatically.
The BACKFLIP runs on Android 1.5 currently but Motorola said it will be giving upgrades to Android 2.1 to all it’s Android phones.