Quote from walterjennings:
nitro, the no keypad concept is huge. iv been waiting for a purely display based interface ever since seeing it on star trek when I was a kid. the multi touch screen is revolutionary with what it can do / change how people use computers, at least the MIT demos were pretty amazing. (google video multi touch screen)
innovation in the human-computer interface in the ipod was the main reason why people loved it so much. i wont be surprised if the display based interface on the iphone has a similar following.
Excellent point, and remember when the mouse first came out as a computer interface. Everyone wanted to know why you would ever want to take your hands off the keyboard, and now everyone wonders how they could use a computer without a mouse.
that's pretty nifty the iPhone gives you the power to define your own UI.