Classical music may isn't to everyone's taste, but who hasn't waved their hands about like a conductor before? iPhone app TikTakt lets you do that, but by shaking the iPod to control music from the likes of Mozart and Beethoven.
The conductor looks like a Mii, but behind him there's a "small orchestra that performs according to your conducting." That's a license to kill right there. While only four songs are available from the start, you can download more through the app, which costs $4. [iTunes via AppsPlayground]