Fans of Destructoid will know that we've always been big supporters of Halfbrick, so it's an easy Free App of the Day pick today. The increasingly popular Fruit Ninja has become free for Android users, and it's not one of those piddly glorified demos.
Fruit Ninja Free will provide the full game, including all unlockables, Openfeint support and Facebook/Twitter integration. We reviewed the iOS version a while ago, and rated it highly, because it's a great little game.
If you don't have it, get it. Quite simple!