I know, I know, his Discworld novels are pap for sad geeks, still hungering after Dungeons and Dragons (err, like me, although I never did do D&D).
And certainly, some of them are on the very light side of comic fantasy. However, there are some of them that climb very much higher on the totem pole to what I would consider the literary form (although I\’ve never quite worked out what it is that makes something a literary novel. Is it that the publisher\’s assistant will have a name like Jocasta? Or that it doesn\’t sell many copies? Or that it\’s about adultery in Hampstead? Dunno).
This one, The Truth, for any who have not tried one of other of his novels, is what I think is the best of them all. A delicious satire of the press. With some really rather wonderful economic insights (for example, the dwarves work out how to turn lead into gold. Yes, you guessed it, by making printing type.). Plus a lot of very good jokes.
If you\’ve not read any of them then I thoroughly recommend that one specifically. Not so much as part of the series but as a simply great piece of comic writing (and I see no reason why comic writing cannot be literature).