Actually many years ago I started trying to use software to track how I was spending my money, which was really useful when I didn't have any. The couple of bounced check fees encouraged me to keep better track.
I think at this point since there are so many things to occupy my time with similarly tracking my time is really useful. (And because I have a computer addiction, I couldn't actually use paper.)
Also KOrganizer has a really neat feature called the Marcus Bains Line. Every software calendar program should have that feature. (it's a thin little line showing the current time on your schedule).
Now if I can just get my alarm clock to read my schedule and automatically set the alarm based on when I need to get up...