This is a very popular technique for photos taken for editorial purposes (for example, if you're shooting a CEO for a magazine or newspaper article about his company). It's also popular in high-end executive portraits, because the effect leaves the subject totally focused but adds movement through the rest of the photo. The effect is so simple to apply, you're going to wonder, “Is that all there is to it?” Yup, that's all there is to it.
Quick Tip: How to navigate your image when you're zoomed in close
When you've zoomed in on an image, trying to navigate using the scroll bars is frustrating at best, because when you're zoomed in really close, even a small move with the scroll bar can move the area you're working on ...