I recently read "Thud" and "Snuff". Pratchett's writing in these two is sharper than ever. I think Sam Vimes has shaped up to be the most solid and detailed character Discworld has given us. The incorruptible man, constantly doubting himself. Descended from the man who killed the last King, then getting landed with Corporal Carrot, the same King's heir.
Everybody likes Carrot. Everybody does what Carrot wants them to do. By default. Vimes knows Carrot would be the King if his ancestor hadn't chopped off the old King's head. . . .Vimes can see Carrot's Kingly charisma, and his easy way with people, and he doesn't trust it very much.
But that's ok, because Sam Vimes trusts Carrot. Carrot is the most honest and honourable man there is. Thinking about it, Vimes and Carrot have a bit of a Gaspode/Laddie thing going on.
Pratchett's peerless talent for building peripheral characters up over three of four volumes has given us priceless characters, like Ponder Stibbons, Nanny Ogg, and Lord Vetinari. In Snuff, Willikins is given his head, and it works perfectly.
Thud takes a good look at the topically close to home theme of Religious Intolerance and Fundamentalism. And it looks in some deep, dark places. But also gives us Mr Shine.
Snuff is a thinly veiled analogy of how Nazism infected 30's Europe. With Concentration camps, ethnic cleansing, collaboration, racism, and genocide. Sound a bit . . . .grim? Yeah, it is in places. But Sam Vimes and Willikins make a right pair of double hard bastards, who will not give One. Fucking. Inch.
Snuff is far and away the best Terry Pratchett book since . . . .the other 25 or so best Terry Pratchett books. And so is Thud.