1. When the Agatean Empire requested that Ankh-Morpork send "The Great Wizzard" to them, how did the faculty at the Unseen University know that they meant Rincewind?
From Quiz Terry Pratchett's "Interesting Times"
Answer:
Rincewind's hat was embroidered with the word "Wizzard"
The Archchancellor of the Unseen University, Mustrum Ridcully, had been summoned to see Lord Vetinari, the ruler of Ankh-Morpork, because Vetinari had received a message from the Agatean Empire via an albatross. Rather, he HADN'T received a message from the Agatean Empire and it DIDN'T come via an albatross, but never mind. The message said "Send us instantly the Great Wizzard". Vetinari didn't want to mess with the Agatean Empire, so he wanted Ridcully's assistance in sending a wizard to them by tea time. The spelling of the word "wizzard" was familiar to Ridcully, although he couldn't place it, but the librarian at the Unseen University, who had been transformed into an orangutan in a prior novel, remembered where the word appeared: Rincewind's pointy hat, with the word "WIZZARD" embroidered in sequins on it, had been sitting on a shelf in the library. "What kind of sad, hopeless person needs to write WIZZARD on their hat?" asked Ridcully. When the faculty located Rincewind and teleported him back to the university, they had their confirmation: He was wearing a hat made out of coconut leaves and bamboo with the word "WIZZARD" on it, written in seashells.