Good Artist/Bad Person?

For those who were interested in the dilemma I referred to a couple of days ago, in my entry titled "Distraction," a follow-up piece in today's entry in The Buddha Diaries may also be of interest. It's called "Speaking of Nazis..." With reference, particularly, to the life and work of Martin Heidegger, it raises a familiar question: is it possible to be a really bad person and a good artist--or, in Heidegger's case, philosopher/writer? Conversely, does being a really good person preclude the possibility of being a really good artist? (I don't come up with an answer!)