Gibson has written books I can read over and over, and some I have read more times than I actually recall. Idoru is, I think , my all-time-favorite. There is something in his writing that makes accessible a too-possible future to the sensibilities of now, and an emotional resonance I don't find easily. There is a definite saudade flavor to it, which is why I feel my guts twisting every time I read the subway death scene.
His most recent writing seems to me almost like a new genre, the alt-now genre (compared with the alt-historical angle of steampunk, etc). The elements of his books that are fabricated and those which are drawn from things going on in real life right now are — for me — essentially indistinguishable. Does he live in a neighboring reality, or what? It's amazing.
Also, he said something I absolutely relate to, which is that he has been known to begin his books in ways meant to deter the tourists, and only reward the intrepid readers. If you have read his books, you know exactly what that means, and if you have not ... well. I think you know what I will say.