BOS is one of my semi-regular airports as well, and they have one. Of course, the TSA at BOS is so screwed up, you can't tell if there is an advantage or not!
And, I agree with OrangeCountyCommuter. ATL has so many lanes open now that if you just use the main lines, and then go to the far right when everyone turns left, you can beat the SP line on the South concourse.