Last year, a mini-series of Hogfather was released on Sky One TV in the UK. It was very well done, and almost perfectly cast.
They are following it up with a similar production of Colour of Magic. But this time, the casting seems to me to be not anywhere near as good.
I do not underrstand why Sean Astin would play TwoFlower, for example. And 67 year old David Jason as Rincewind??