The Neon Gen concept phone has a slim and sexy design. It also features a rotating display. The phone consists of two parts and can easily be slid open from the side, then you twist the top half to reveal the display.
The display supports touchscreen input and uses clips instead of screws to make assembly easy and presumably cheaper. The slim design makes it easy to carry with you in any situation. It might not be long until we see this sort of design being offered by manufacturers.