The "nurple" is actually called the TrackPoint. I first met it when I > had to borrow a Thinkpad to take notes in a meeting. I used it for 45 > minutes. After I returned it and went back to my regular desktop > keyboard (sans Trackpoint) I found myself automatically reaching for the > (non-existent) TrackPoint. Found it very easy to control, but I have a > rather light touch. A heavy touch would make it hard to use. > > I consider them one of the most ergonomic and best pointing control > devices anyone's made. Although my person favorite pointing device is > still a Wacom graphics tablet.