I am totally amazed about how little I know about Mac`s and the OS. I am a first time Mac buyer, used them in college though. I had no clue that their is software to go with the Magic mouse other than the native support in the OS. Is there any other surprises that I can look forward to?
At the moment, SteerMouse IMO. Mainly because it fixes the awful OSX mouse acceleration. I wish USB Overdrive would update to support the Magic Mouse already.
If you don't care about fixing the mouse acceleration, BetterTouchTool is great.