Fake Windows Phone 8
Trick your friends into thinking you have the new Windows Phone 8 device. This app is replica of WP8 (not relased yet, don't mistake it with WP7) start screen. Remember this is not a launcher, but actually it can launch apps. Get newest Metro UI style on your phone - its free.
Most icons will launch Android ready-set app, but if you want to change that press long on tile and choose your app. You can also change tile color in this way.