Many are seeing productivity levels rise when the computer can go with the employee. If they're anything like me, they will be more productive with a laptop, since my inspiration comes more readily when I'm away from my desk and when there is no computer around to enter my latest additions to the Next Great American Novel. I think everyone I know has one. This could be a foreshadowing of potential PowerBook sales in the future. The Palm handheld or some form type of Windows handheld is becoming equally ubiquitous.
Features are nearly comparable with desktops.
You can take things with you that are heretofore unheard of. I've taken PowerPoint presentations that I created in minutes to meetings. They look gooooooood. Now, don't get me wrong. My PowerBook helps me maintain this pace.