Everyone choosing to stay at the press with William even though there might be legal trouble. The friendship and loyalty is heartwarming in itself.
Otto going to help William and then comforting William when he worries about being like his father. (Otto doesnít do a good job, but itís the thought that counts.)
Wuffles and Vetinari. Just their scenes together. Even though Wuffles is old and has the stinkiest of breath, Vetinari doesnít even notice. Itís clear that he loves his doggy and his doggy loves him, as Wuffles refers to him as God.
Dogs referring to their masters as God is Older Than Steam. The point stands, though.
Otto finally getting the dramatic thunder he's been wanting the whole book.