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One of the things I especially love about Terry Pratchett's convulsively funny Discworld fantasy novels is that even though they are numerous and interconnected, they are not, particularily, sequels to one another. So this chart that plots the interrelationships -- temporal and character -- between the Discworld books is quite a handy way of referring back to the canon and finding connections you may have missed the first time around.
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I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.