The new Apple Magic Mouse might be magical in some regards, but many owners are bummed because the mouse can’t do some of the cool Multi-Touch functions that the iPhone can.
MouseWizard, a small and inexpensive application for the Mac, hopes to remedy this situation by bringing even more Multi-Touch goodness to the Magic Mouse. The application, which costs $2.50, adds four additional functions to your Magic Mouse: Middle Click, Fourth Click, Zoom/Shrink, and Sleep. 
The fourth click is customizable for Exposé, Dashboard, and Spotlight, and is accomplished by placing two fingers on the mouse surface, one on the right edge and one on the left. The selected action will then be completed without even having to do a click.
The Zoom/Shrink function is probably one of the coolest reasons to own a Magic Mouse and this software because it allows you to zoom in and out iPhone style by pinching and stretching two fingers across the surface. It works in many applications and can come in handy when you need to zoom in on an image or PDF in Preview.
The last new function that MouseWizard will give you is the ability to sleep your computer by covering the entire mouse surface with your hand and clicking.
The MouseWizard software is a simple application that stays in the menu bar. When you click its icon you will be able to set your preferences in a System Preferences styled window, complete with a testing area to try out the gestures. The application must remain open in order to keep using the new gestures.
Overall, we found this application to be a great addition to the already great Magic Mouse. We also discovered that if you own a MacBook Pro that you can also use this software to give your Multi-Touch trackpad some additional features.
You can get a 10-day trial of the MouseWizard software from the developer's website.
nelsonh
November 23, 2009 at 9:29am
I've been trying to use MouseWizard for a week with very little success. I can't get the extra gestures to work, and it causes a problem with Safari that makes it hard to close tabs, as well as making mouse-clicking unresponsive in general. Love the idea, but needs a lot of work.
michaelddiaz
November 19, 2009 at 11:33pm
You can Download a program called "Better Touch Tool" to make more gestures available on your magic mouse. Just Google "better touch tool" to find the page to download to program. You can get expose, spaces and the middle click to work on the magic mouse using three finger swipes. It's a free program, and works pretty good.
mattc986
November 19, 2009 at 2:04am
Haven't tried this because I don't own the new Magic Mouse.
But you could try this: BetterTouchTool. It's a free application built on the MultiClutch pane (which broke in 10.6) but it is now like MouseWizard in that it has to be running and runs in the menu bar where as MultiClutch was a pref pane. So far BetterTouchTool has worked great for me, even better than MultiClutch. BTT lets you set two and three finger swipes as well as taps for the Magic Mouse. For the trackpad it lets you set rotates, zooms, and 4-finger gestures as well as the above mentioned two and three finger swipes/taps. Not only that, you can set them for Global or specific applications. As I said I don't have the Magic Mouse so I can only vouch for it working as described on an early 2008 15" MBP.
Best part? Totally free.
Link: http://blog.boastr.net/?page_id=195
NOTE: I'm not affiliated with BTT at all, just passing it along. Also, note that it is not a completely polished app yet, being only at v0.327 (stable). However the developer is daily improving it. And like I said, it has had zero issues for me so far in SL 10.6.2 and in fact is more reliable than MultiClutch was in 10.5.
