Terry Pratchett - Unseen Academicals

Another Ankh-Morpork novel, and one that's much in the vein of Pratchett's latter-day work - it's thoughtful, clever and amusing, but rarely laugh out loud funny (although it has its moments). I think that the wizards are increasingly my favourite characters; in the past, it's generally been (in no particular order) Vimes, Vetinari, Death and Susan.