Spark is a neat little app for Android that turns your Android phone into one of those plasma balls (sort of).
When you draw your finger across the touchscreen, bolts of lightning shoot out in all directions and the phone vibrates.
You can customise the colour and width of the bolts, and how forked the lighting is in the settings.
There’s also a ‘ghost mode’, which displays your phone’s homescreen as the background instead of the normal black background.
It’ll look like there’s nothing running on your phone but the screen will emit sparks if touched. A good way to wind up those people who are forever wanting to borrow your phone.
Unfortunately there’s no support for multitouch but there may well be in future updates. This is a good fun app and it’s free.