I've recently moved all my grading over to excel spreadsheets, and I took the time to set up an area on the sheets that is filled with formulas that automagically calculate the students final grade based on my preset percentages for homework, tests, etc. Does anyone else do this?

I know that electronic lists are all the rage, and that I could keep my task and to-do list on the computer, or my smartphone, but I prefer to do everything on paper still. Thoughts?