Give your buddies a shock by installing Electric Screen Live Wallpaper on your Android device.
The app simulates the effect of electricity running across your screen. The animated effect is of colored forks of electricity darting about a black background. If you hold your finger on the screen a bolt of flash of electricity will surround it and a zapping noise will play.
The effect in Electric Screen Live Wallpaper is pretty crude and the constant flashing gets irritating very quickly.