I just saw Coast, quite by mistake (although i do like the programme).
I thought the footage was really god and it was quite a long piece as well. Great shots of the stones, and the rock art bit was amazing. I have to make it there some day.
We planned to do the trip out there when we were in Brittany last year, but hadn't quite accounted for the sheer quantity of stuff to do in such a short time! We thought we'd save it for another visit, of which there will be plenty, I assure you!
Absolutely stunning place. Can't wait to get back.