As an illustrator, the iPad is becoming more useful. Adobe Ideas is a great vector sketch program that will feel intuitive to Photoshop users. I found other art apps frustrating because relearning a new interface got in the way of creating. Wacom just came out with a bamboo stylus for the iPad. It is the best sketching device for the iPad to date. As a child, the Etch a Sketch was a favorite toy. It has really grown up.