I'm kind of glad that Microsoft didn't include the pen with the Surface 3 (assuming that they would have bumped up the price had they done so) because I never had much use for it with my SP1 or my SP2. The only thing I thought it was good for was simulating a mouseover which I thought couldn't otherwise be done on a touchscreen, but this nifty little utility has taken care of that problem. However, the OneNote integration has made me seriously consider buying one. I'm curious about the various ways in which people have found the pen beneficial. What are people's interesting use cases?