He's back!! See these links for some very nicely written articles on Dr. Wheeler's thoughts on Gage R&R. They are a must read - especially if you are still puzzled why the sum of %repeatability + %reproducibility + %product variation is not equal to 100% . (yes..some of you know this bit already..)
Problems with Gauge R&R Studies
A Better Way to Do R&R Studies
Problems with Gauge R&R Studies
A Better Way to Do R&R Studies