Books like Wyrd Sisters

How have I never read Terry Pratchett before? He's like ... Shakespeare and Wodehouse and Monty Python all wrapped into one!A student gave me this book while we were studying Macbeth in class. Wyrd Sisters is a sort of parallel story, which manages to poke fun at the play, revere the play, make inside jokes about the play, and ... well, generally turn the play on its head. All the while, you, the reader, get to feel very smart and superior for getting all the jokes and allusions.And yet it manages to avoid being gimmicky. It really is a good story with good characters, too. This is no Life of Brian where the story itself matters less than the hilarity of the parody. Wyrd Sisters may draw a good deal of life from Macbeth, but its real liveliness comes from Pratchett's skilled characterizations of a regicidal Duke, his murderess Dutchess, their depressed Fool, and three very colorful witches.Oh, it's just genius. My only problem is figuring out what Pratchett novel to read next ... he's dauntingly prolific!