Lion Transformation Pack (LTP) will transform your Windows 7/Vista/XP user interface to look like Mac OS X Lion. It is a freeware enhancement application.
Here is a screenshot to illustrate the features and user interface of this application:
Free Software for Windows Users. Screenshot of Lion Transformation Pack - 800px · 521px
Earthview
DesktopOK
WindowTop
7+ Taskbar Tweaker
TidyTabs