Apple introduced its new "Mighty Mouse" today. What makes this mouse kinda interesting is it's "scroll ball", basically a miniature trackball.

Also, notice there are no mouse buttons on the top. That's because they're hidden underneath the plastic case. Tap your finger on either side of the "scroll ball" and it's just like clicking a mouse button.

It also has a button on the sides. These can be squeezed by the thumb and the ring-finger, to launch the Mac OS X Tiger Dashboard, Exposé or a whole host of other, features.

The new Mighty Mouse is available now, for $49.00.