As part of their ongoing Gateways to Geekery series, the A.V. Club has produced a feature on getting into the Terry Pratchett books, particularly the Discworld series.  I started reading these when I was 12 or 14 (my uncle gave me one as a  present. Thank you Uncle Philip!) and haven't stopped almost 20 years later.  I've since met Sir Terry, which happened to be the first day I saw my wife-to-be (I didn't meet her then; I was bored waiting in line with a buddy of mine to meet the author and systematically created nicknames for all the other people in the line, and she was apparently one of them).

One of us will eventually cover his books in a more detailed post, but in the meantime, I think you, our readers, might be interested in the article, particularly since the latest in the Discworld series, Snuff, has just been released.