Telling that, as of now, most comments mention a different film of his. Kilmer was great in so many things! I’ll just add Kiss Kiss Bang Bang to the pile, RIP to a great actor

I’ve seen his books translated into multiple languages and fans of his that read him in those languages. I think with a capable and dedicated translation team you could have a reasonably close translation, though some linguistic jokes would likely be lost. Then again, a single Discworld book has insane joke density, so losing 2-3 isn’t the end of the world.