Brunch/lunch in Acton/Concord area?
Do a search on the New England board. A while back there was a discussion about lunch places in Acton/Concord/LIttleton, etc..
Lots of people love Hudson Super Buffet. It isn't big on atmosphere, though. Gibbet Hill Grill in Groton is nice.
I think the Colonial Inn is terrible. I am so sad for the people disgorging off the tour busses there, imagining they are pretty hungry and knowing what awaits them
In West Concord, Nashoba Brook Bakery has a waffle bar on the weekends. Or they used to