well, the book where the quote came from, Hogfather, was made into a wonderful miniseries. As were the first 2 books of the discworld (colour of magic).
Looking for links I found out, that Going Postal was also adapted.
https://en.wikipedia.org/wiki/Terry_Pratchett's_Hogfather
https://en.wikipedia.org/wiki/Terry_Pratchett's_The_Colour_of_Magic
https://en.wikipedia.org/wiki/Terry_Pratchett's_Going_Postal