Not sure if anyone's posted this but.
My choice:
Robert Jordan
"The Wheel of Time"
And not the hail mary pilot attempt craptastic Red Eagle ent. made to attempt retaining the rights to the series. Give it to HBO for the love of all things fantasy.
Edit: This can include any kind of literature. Books, comics, anything you like.
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A really obscure novel by Lester Del Rey called The Mysterious Planet. I've only ever seen one copy and never met anyone who's read it, but it's been my favorite book ever since I read it.