Beafon's S50 is one of the more stylish handsets here. It's a sleek and curvy slider finished in gun-metal gray, and when the handset is shut, the only controls on display are the call make and break buttons, and a vertical rocker nav control. The rocker may lack the four-way steering of a navpad, but it's a lot more …
One of the most remarkable demos i have seen is on Apple's site on how to use an iPhone without sight (yes, totally blind).
The video is on this page:
Amazingly, you can use all the built in functions, browse the web and compose and read emails etc without any sight. It looks incredibly easy too. The iPhone can even stay in your pocket.