Cellphone designs that hide the screen when not in use have traditionally been separated into two designs, the clamshell and the slider. People have preferred the clamshell because they're compact, and others like the slider because they usually have large screens. Like Pandas, Samsung's forced the two to mate for the good of the species, and out popped the Sliding-Clamshell.
When you flip the phone open, the body becomes a track for the screen to move up. There's enough room for the standard keys plus an iPod like click wheel. This design seems like it will make phones more compact, but thicker. Is that a sliding-clamshell in your pocket or did you just have genital enhancement surgery?
Samsung Invents Sliding-Clamshell Design [Mobiledia]