Neuromancer still sounds ground-breaking and I hope to read it one day.
As an aside - something interesting I just found was Gibson's thoughts on Blade Runner. He had seen the first 20 minutes of it and thought his book would be seen as a copy of the film. [1]
Edit: I uh finally read the article after spending ages in the comments and see that they mention this exact incident in there. Whoops.
[1] https://web.archive.org/web/20070926221513/http://www.willia...