Show all the open windows preview in Ubuntu

Many people like the fancy feature in Mac OSX that user can show all the open windows preview, actually Ubuntu can do that also, just:

Super+W 

can do it exactly like Mac OSX.

Here is my print screen shows the fancy showing all the open windows preview in Ubuntu.

In case if you want to add Mouse Gestures to it, Like Gnome 3 you can do the following:
(as pointed out in comments)

• Install Compiz Settings Manager
• Run it, Go to Commands under General
• Set Command 0 in Edge Bindings and come back to "Command" tab
• Enter "xdotool key Super_L+w" in Command Line 0
• Install package xdotool
  
  
  
  That's how it looks like in Gnome3, move your mouse to the corner and it will show up!