I'll never forget that the first mp3 I ever downloaded was WG's self-read (and quite edited) Neuromancer audiobook -- must've been late 90's or early 00's. It is four pairs of 45min files and features an excellent techno soundtrack by U2's The Edge. I had never heard of the novel before he released the mp3s for free due to his publisher deciding they needed a more professional version. I have listened to it hundreds of times as programming background sound, such that I can still wow my fam by repeating entire random sections of it.
Much later, I have listened to his latest two books, The Peripheral and Agency many times (with teenage daughter), and love them as they are more actual sci-fi. That said, his previous trilogy (Pattern Recognition, Spook Country, and Zero History) are our favorite of his now, though they are barely what most would consider sci-fi. All his books are really capers and weave in his unique, poignant, and heart-oriented perspectives on our modern world.
It is worth noting that his collection of non-fiction articles, Distrust that Particular Flavor, is thought-provoking and simply wonderful.