Top geek novels of all time

The top 20 geek novels have been voted on by readers of the Guardian. I will admit to having read nine of these novels, including eight in the top ten. Some of these I've never heard of before. Others I've wanted to read at some point but haven't had a chance to do so yet. A few of these - like Nineteen Eighty-Four and Dune - I credit with playing a big part in my personal development. Am kinda surprised to see Watchmen here as it's not strictly a novel per se, but it easily ranks as one of the greatest works of English literature in the past 25 years, so it's got that going for it. Anyhoo, here's the complete list...

1. The HitchHiker's Guide to the Galaxy -- Douglas Adams
2. Nineteen Eighty-Four -- George Orwell
3. Brave New World -- Aldous Huxley
4. Do Androids Dream of Electric Sheep? -- Philip Dick
5. Neuromancer -- William Gibson
6. Dune -- Frank Herbert
7. I, Robot -- Isaac Asimov
8. Foundation -- Isaac Asimov
9. The Colour of Magic -- Terry Pratchett
10. Microserfs -- Douglas Coupland
11. Snow Crash -- Neal Stephenson
12. Watchmen -- Alan Moore & Dave Gibbons
13. Cryptonomicon -- Neal Stephenson
14. Consider Phlebas -- Iain M Banks
15. Stranger in a Strange Land -- Robert Heinlein
16. The Man in the High Castle -- Philip K Dick
17. American Gods -- Neil Gaiman
18. The Diamond Age -- Neal Stephenson
19. The Illuminatus! Trilogy -- Robert Shea & Robert Anton Wilson
20. Trouble with Lichen - John Wyndham