Besides what the other poster said, trackpoint scrolling is amazingly good and life is just better in any programs which require a great deal of back and forth

Besides what the other poster said, trackpoint scrolling is amazingly good and life is just better in any programs which require a great deal of back and forth between keyboard and mouse; PureData is a good example, type a few words, select and move stuff, type a few words, select, move, repeat for hours on end.