Muhammad Irfan Khairin

From Easystroke site

Easystroke is a gesture-recognition application for X11. Gestures or strokes are movements that you make with you mouse (or your pen, finger etc.) while holding down a specific mouse button. Easystroke will execute certain actions if it recognizes the stroke; currently easystroke can emulate key presses, execute shell commands, hold down modifiers and emulate a scroll wheel. The program was designed with Tablet PCs in mind and can be used effectively even without access to a keyboard. Easystroke tries to provide an intuitive and efficient user interface, while at the same time being highly configurable and offering many advanced features.

I've used this software since in Intrepid release. It make my life a lot easier.

I can maximize, restore, minimize windows, launching nautilus, open terminal, some compiz effect without having to click any button or use any keyboard shortcut. It all done with just a stroke on your touchpad that execute certain actions you have set.
To install please enable the universe repository then type in terminal

sudo apt-get install easystroke

It also can be set as per application. From my screenshot below you can see I've set the eog (eye of gnome) to rotate image left and right.
You can also change preference from the menu.
Now, you will know why I said it make my life a lot easier.