It seems like every math course has something unique in how things are graded.  


1) What are some interesting grading systems you have seen/used?  (include curving types, etc.)

2) What are some pros and cons to this particular system?  

3) Would you use it again if you have used it yourself?

One system for grading a final exam that I recently came across was <a href="http://www.math.uwaterloo.ca/~kpurbhoo/co630/pageonefinal.pdf">this</a>.