Android is most talking news in internet actually it a mobile operating system. If you want to try Android app into your pc, Bluestacks is software it will help you to test and play Android app in your pc. Bluestacks is now available for free, the paid version will come soon.
You can easily download Bluestacks into your PC after installing the software the interface of Bluestacks will appear on right side of the desktop. When you install Bluestacks it will comes with 10 pre-installed apps. The free version of Bluestacks will store up to 26 apps.
You can also Syncs apps from your phone to PC.it will runs on Windows 7 and Windows Vista version. They claim that Mac version will to come soon.