The book in question is Christopher Brookmyre's A Big Boy Did It And Ran Away (which is a cracking piece of observational comedy in the form of a terrorist thriller, taking in everything from egomaniacal rockstar wannabes to first-person shooters to 1980s Scottish indie-pop to the whole Generation X condition).
The last book I read for the second time was Malcolm Gladwell's The Tipping Point, earlier this year; I hadn't read it for some years, and had forgotten most of the details (or, more probably, they had become buried under a lot of other reading on similar topics). Before that, I hadn't reread a complete book in years, as I usually lost interest halfway through. I recall reading Neuromancer twice, the last time being some years ago, and stopping halfway through a rereading of Snow Crash, distracted by something else.
After this, I'll probably pick up The Best Democracy Money Can Buy or something.