Transform your boring default Windows to Windows 8 using Windows Transformation pack 8.

You can download and install the transformation pack from here.

Features - 

-Seamless installation and un-installation giving users safe transformation
-Easily configurable in single click with intelligence Metro UI design
-Designed for all editions of Windows XP/Vista/7 including Server Editions
-Genuine Windows 8 system resources with Metro touches
-Smart system files updating with auto-repair and Windows Update friendly
-Fresh start for Vista/Seven Transformation Pack users with updated Windows 8 themes and resources
-UxStyle memory patching
-Windows 8 themes, wallpaper and logon screen
-UserTile with current user auto-configured on login
-Metro UI desktop emulation with pre-configured gadgets
-Aero’s auto-colorization feature
-And much more

Install Windows 8 Transformation pack  -

Few screens of Windows 8 after the transformation - 

Start 

Desktop

Logon screen

Got any suggestions for any other transformations? Do let us know in the comments section.