Last year my NCAA basketball tournament spreadsheet was quite a hit. To make it even more popular, I have added the ability to score bonus points for upsets. Bonus points can be awarded based on the difference in seeds between the winning and losing team. If an "underdog" team wins, you can give whatever amount of bonus points you want depending on how much of an underdog they were (a 16 beating a 1 deserves more bonus points than a 9 beating an 8).

See the instructions in the original post and in the spreadsheet file for more details.

http://josh.breittechnologies.com/blog/2009_03_13_NCAA_Basketball_Tournament_Bracket_Spreadsheet_File