I'm posting this in response to a post on the Manhattan board, which asked for information about Blue Hill at Stone Barns.
I've been a few times now, and I've been meaning to post a more detailed review, but I keep failing to get my scribbled notes together so that I can say something specific.
In short... yes! I recommend BH@SB highly. I think that, if it were in Manhattan, it would be among the best restaurants in Manhattan currently. I think the cuisine is especially enhanced by their use of local ingredients from the farm (and nearby farms). So far I've been particularly impressed by their eggs, chicken, pork, and herbs that I think are picked moments before cooking.
The question of whether it's worth the money depends on how much you're willing to spend for dinner, of course. But I'd have to say that it's very fairly priced by Manhattan standards, at least, and much of the wine list seems to have unusually modest markups.