Twisted Kilt by Thirsty Dog (OH Brewery) is one of my favorites but considered on the light side for Scotch Ales.
Claymore by Great Divide Brewery is another good one.
Wee Heavy is a category and I forget the name of the craft brewery we get around here, probably out west somewhere.
They tend to be dark with a hearty body and a slight caramel after taste. I think there are different categories. I'm sure 9296 and Milo know more about them and can provide more info.
Great sitting and drinking beers, during a good session the Scottish influence makes me want to punch my British neighbor in the face except he usually is the one that brings the stuff over so I have to restrain myself