After developing for the iPad for a month now I’m still awed by the things you can do with it… and I haven’t even been able to touch one yet.

The thing about touch-screen interfaces is that everything is the screen.  When you have 5 times more pixels, you don’t just get the extra display space, you also get 5 times more interaction. 

http://www.engadget.com/2010/03/27/new-screenshots-of-ipad-apps-start-to-make-this-thing-seem-less/