Try out this free app called Face Swap by Microsoft Research. Though, its only available for Windows Phone 7. The app will be able to detect multiple faces which you can exchange just by shaking your phone.
This may be the most useful hack coming from Davehax: how to cut rope without using any tools at all. If ever you're caught in a situation where you need to apply this knowledge, you'll be glad then that you watched the video below. Read more
Prank videos are fun and funny but sometimes the results might go the other way round. Though this isn't a prank like the killer clowns or anything scary, it is an annoying one nonetheless. It's called 'Kiss my ass'. Read more