Why are all the magic mouse gestures different from the trackpad ones?
This makes no sense. it's big enough to use 3 or 4 like the trackpad. Really makes it tough to switch back and forth.
MacBook Pro 17"
Try BetterTouchTool. It has Magic Mouse support.
BetterTouchTool - adds customizable gestures to Magic Mouse, Macbook Touchpad and the Magic Trackpad, plus keyboard hotkeys, and Windows 7 style window snapping.