Easily the most impressive episode this series. As a lifelong Van Gogh fan, as well as a sufferer of Bipolar Disorder, i found the treatment of Vincent and his illness in the episode was handled very well. It would have been all too easy to present him as a lunatic, instead it showed him for the brilliant if troubled man he was. And the ending was genuinely moving, i really can't fault the episode at all.
And i echo the sentiments that the BBC need to do a Van Gogh period piece and keep Tony Curran in the role