I'm working on the really wanderful campaign file from Imarkus to hack some macros.
I always hated not being able to use all those rules in the books and not having at hand all the DC for all the possible actions you can do (yes I know as a master you RULE which IS the DC, but this means not using all the money spent on books).
I used to create tables to print and to consult when the need arised, but time has come short to update it and I end up loosing the table around.
Having something automatic was my dream.
The macro system of MapTool is really wanderful and powerful so took the existing macro for rolling skills checks and added the ability to list for the skill chosen all the actions possible and to show the DC and calculating success.
Here you can find the code.