Take a look at Apple's latest invention. 360-degree scrolling. A great boon for graphic artists. Here's the description:
Meet the mouse that reinvented the wheel. The scroll wheel, that is. At $49, Mighty Mouse features the revolutionary Scroll Ball that lets you move anywhere inside a document, without lifting a finger. And with touch-sensitive technology concealed under the seamless top shell, you get the programability of a four-button mouse in a single-button design. Click, roll, squeeze and scroll. This mouse just aced the maze.
Read more: Apple - Mighty Mouse