Apple Computer, the company that helped popularize the mouse, gives more powers to its newest device, Mighty Mouse. The key feature is the Scroll Ball, which allows 360-degree movement with just one finger. Touch-sensitive technology under the top shell detects where you're clicking.
Mighty Mouse has buttons on either side that you can squeeze with your thumb and finger to activate some Mac OS X features. It will retail for $49.99.
Three generations of Apple mice: Apple's "hockey puck" mouse, the Pro Mouse and the new Mighty Mouse.