A free utility app that adds functionality to the Magic Mouse, allowing you to set actions for clicks and taps based on how many fingertips are on the mouse’s surface. MagicPrefs also allows you to adjust the tracking speed and tap sensitivity. No support for “pinching” yet, but it looks like it’s in the to-do list. Basically, this is the solution to [my problem with the Magic Mouse](http://shawnblanc.net/2009/12/magic-mouse-miscellany/).