Interesting idea...not!
I'm not sure I want any formulas from someone who's 71-92 career. I'll pass.
On the other hand, if anyone would like to look at my Excel spreadsheet...and we're talking some heavy stuff here. Feel free to go pound sand!
~spit
P.S. if anyone wants to sell a copy jconte's excel GD workbook, post your ebay listing here. I'll check back.