If you’re not familiar with the concept of mouse gestures, it’s simple: by holding down the right-click button and dragging your mouse in a pre-defined fashion, you can execute a user-defined command or action.
For example, you could set up a global mouse gesture that launches Opera any time you trace ‘O’ on your screen.
StrokeIt lets you customize commands based on application, and it comes with a ton of pre-baked gestures that you might want to try out to get the hang of it. Mouse gestures are only limited by your imagination to use them. It is a very useful tool if you want to save time or are too lazy[:P] to take your mouse all the way into the Programs menu to execute your programs.
StrokeIt is donationware, Windows only. It also comes with a plugin to minimize it to the system tray. I find it very useful. Download it here