With the new iMac, Apple also throws in a new companion product that replaces a mouse, the Magic Trackpad.
From Apple: The new Magic Trackpad is the first Multi-Touch trackpad designed to work with your Mac desktop computer. It uses the same Multi-Touch technology you love on the MacBook Pro. And it supports a full set of gestures, giving you a whole new way to control and interact with what’s on your screen.
The trackpad is made from aluminum and glass and sells for $69.