The Synaptics Onyx Concept Phone is pretty neat. No buttons, just a touch screen with gesture support:
The Onyx concept acts as a remote for your life. And because life is activity based, not application based, the concept illustrates how applications such as phone, GPS, music, teleconference and calendar events can work simultaneously. The Onyx concept does not base its experience on treating applications as separate windows or entities that work in isolation. Rather, the Onyx concept seamlessly integrates functions into activity based experiences.…More intelligent than conventional touch screens, the ClearPad accurately recognizes not only points and taps, ...