I constantly hear about the requirements introduced into IT projects by the Sarbanes-Oxley law, called SarbOx for short. If you haven't researched this topic thoroughly yet, then I encourage you to get to know this important legislations. You can find out lots of details about SarbOx at this good resource - http://www.sarbanes-oxley-forum.com.
You can search the forum for lots of interesting details about SarbOx and how it translate from law into the daily life of an IT practitioner. For example, you could search on Excel or spreadsheet to find out about with this URL.
Thanks to Steve Kass and Charles Kyd for their help with this technical tip.