All their beers taste like one beer with some kind of flavor packets added to them to get the different varieties. I don't know if that's what they do—surely it's not?—but damn is it ever what it tastes like. I've never encountered another brewery that gives me that vibe.
I read an article in a craft brewing mag (might’ve been “Celebrator” circa 2003) that pointed out how the craft brewers association kept revising upward the number of barrels/year production that still qualified as “craft” so that it continued to accommodate Sam Adams.