Having a look at some lightreading articles ran into Jeff Han's "interface-free," touch-driven computer screen, which can be manipulated intuitively with the fingertips, and responds to varying levels of pressure, quite an impressive piece of kit !
On top of all the potential (i.e. the usual sex driven devices!) i think his point around data visualisation is a key one - plotting complex data mining information and allowing the end-user to manipulate it using a tool like that will make understanding of the internals of businesses easier (hopefully).
Kudos to Jeff ! and hope to see it in the iPhone soon ;)