Today it is possible to be productive, keep in constant contact associates, and have fun at the same time. At least that is what ads for the latest digital gizmos claim. While writing an email to you boss or finishing a paper for your economic class, you can check for live updates on a tennis match halfway around the world or load song into your portable device. The boss expects you prepare a sales report for tomorrows's meeting. No problem. You can do it and read a movie review. at the same time. or can you?