Guards, Guards, for the perfect, all-in-one introduction to Discworld’s major city, to its plethora of characters and races, and to the immortal Vimes.
Monstrous Regiment, for searing satire on feminism, war-mongering and class.
I Shall Wear Midnight, for its bitter rage against leaving life’s essential messy parts to someone else, preferably someone underpaid and ignored.
Lords and Ladies, in which witches stop being funny and start saving the world, because those fairies are EVIL.
Unseen Academicals, for the perfect joy of football and the irrational hatred of minorities.
Please take it as read that all his novels are uncontrollably funny, and wear their raging anger at the imbecility of humans lightly.