I have heard many people complaining that the Mighty Mouse doesn't recognise their right clicks, due to the touch-sensitive nature of the device. I personally have no problems with it, but a lot of my friends use my Mac and seem not to have the knack for right-clicking. So I came up with a solution, and now no one has any problems.
I simply changed secondary button to the ball rather than the right button. The mouse seems to recognise when you're pressing the ball every time. It's very a simple hint, but it really works.
Mac OS X Hints
http://hints.macworld.com/article.php?story=20070103082828118