I'm not sure if they do the really hard-core fittings, but JRA Cycles in Medford, MA, is hands-down the friendliest shop I've encountered. Not a single person there has attitude, which is really refreshing. They are a bit under the radar as they're known more for mountain/cross/commuters/BMX, but they have a good supply of road bikes too.
My main road bike was fitted by John Allis at Wheelworks and he did a great job...although the final adjustments were done on a day where they were quite busy (an issue at Wheelworks, even though this was on a weekday afternoon!) and it felt he was distracted. So I may have had to do more tweaking than otherwise. Still, the basic fit was great and John is super. I believe, though, that he and his wife retired to NH last year.
I didn't know Greg Robidoux did fittings - I would recommend him just based on his being a super-nice person!
Crankin, I've also found that ATA isn't the greatest store with women. I've had that experience with Quad as well. Why do shop owners feel like it's a good idea to yell at a customer? Yes, I know I'm terrible at maintenance - but there are better ways to communicate that!