Read "The Colour of Magic" if you get the chance, it's hilariously funny in spots, especially if you're a little bit of a fantasy geek.
There's also the Hogfather, a book released later in the Discworld universe, that got turned into a double TV movie. It is a much more faithful reproduction as they had more time, which in the case of the Hogfather was truly necessary.
It's like how programmers designing registration systems become obsessed with talking about registration forms and CAPTCHAs. It's just where their minds dwell as they work.