Thanks largely to a couple of tweets about a Deadwood movie from actor Garret Dillahunt, who starred in Deadwood, HBO has had to confirm preliminary talks are under-way.  The Emmy award-winning show was cancelled after three season in 2006, but rumours emerged soon after that creator David Milch was working on two Deadwood movies.  This never happened, but things are starting to look promising again for a show that still has a large and passionate fanbase.