Also, I just viewed a webinar on How Six Sigma Techniques Can Improve HR Processes and it's available (after a free registration) to anyone.
http://www.peopleclick.com/knowledge/webinar/051705.asp
There is quite a bit of introductory information regarding Six Sigma, but it might give HR folks some idea how their peers are viewing Six Sigma (there are several surveys during the webinar) and I came away with a couple of points:
Q: How to measure Quality of Hire?
A: There was a suggestion that Quality of Hire could be measured 60 to 90 days after hire, with a survey to the Hiring Manager with the following questions:
* Did the hire meet / exceed / not your expectations?
* Did the hire meet / exceed / not the skill set needed for the job they were hired for?
Q:How many approvers are needed for requisitions and offers?
A: SOX compliance indicates that 2 levels are required and that these are not able to be changed (I didn't understand the last part of that answer at all).