Star Wars Literature
I love Star Wars. It's a brilliantly portrayed, futuristic (yet also somehow a long, long time ago...) take on the classic tale of the struggles between good and evil. But what I love about Star Wars in addition to the epic saga of films is the ever evolving and largely continuous universe that surrounds it.
A rich and vibrant history of a similarly rich and vibrant galaxy is brought even closer to the realms of reality and realms of the believable not only in the quantity of material, but more often than not by the quality, forethought and the consideration for detail the authors have for the source material, as well as their obvious and evident affection for Lucas' masterpiece.