Here's a new iPhone app that could be fun to play around with at your next office party. Called Picture Sketch Pro ($1.99, available here), the application promises to turn pictures into artistic sketches. All you have to do is push a button and Picture Sketch Pro does the rest. You can select an image from your photo albums or simply use the iPhone camera to take a picture. It offers three modes to choose from: color, sepia, and black-and-white. And, interestingly, the developer says you never get the same sketch twice, even with the same picture.