I've had time to re-read the books, but this time I read them based on subject matter, i.e. The Watch, The Witches, Rincewind, Moist etc.
It was really interesting to read them again as you can pick up things that you miss or forget if you read the books in the published sequence. For example, I didn't twig why Vetinari started walking with a cane until I read The Watch books one after the other (the cane appeared after he had been shot), and small events like that.
Of course, most of you will probably pick up on all the stories as they appear, but I'm only a Bear of Very Little brain and don't have the best memory in the world.
Now ... what was I saying????