I have to rage cards in my mac station at work, have quark on one screen, word or photoshop on the other. It's pretty useful, but you really have to train yourself to take advantage of it. Of course, a 450mhz Mac is barely capable of scrolling a window and playing an MP3 at the same time. And stability? Win 95 beats os 9! And yet, people keep telling me how great macs are for my job--too bad they don't have to actually do my job and find out the truth.