Missed the list? I’m doing a 30 day geek challenge to counter all my anime nerd friends (I’m sorry, but I’m not calling you ‘Otaku’).
It’s hard to pick a favorite book or book series, having read so many, but in the end, I just had to go with British humor(humour?)
The Hitchhiker’s Guide to the Galaxy by Douglas Adams wins my Favorite Book *and* Favorite Book Series. It teaches you everything about Vogon Poetry, knowing where your Towel is and the significance of the number 42, how dolphins are a superior species (as well as mice), and that Earth is “Mostly Harmless”.

Frankly, I would have chosen either Snowcrash or Neuromancer as the book, what the hell, de gustibus non disputandum est.
And you can geek out in your own way, to each his own.
Hitchhiker’s Guide, no doubt. After always only having 3 or fewer of the books after continual moves, I jumped on a leatherbound complete “trilogy” in the (ahem) literary classics shelf of a bookstore.