Last night a friend mentioned he'd discussed Flight of the Vajra with someone at a geek meetup, although the lead-in was a bit oblique.
Other Person: "I don't read long stories as much as I used to."
Friend: "This book has a guy punching another guy in the brain with a city."
Other Person: " . . . what?"
Yes, this sorta-kinda does happen, but it's that the climax of the story, and it's far from being the most important thing that happens in it. But it's become something of a running-gag-explanation for my friend, who drops it in peoples' laps as a way to spark their curiosity about it. He also came up with a great one-liner to describe the book, one which never fails to turn heads: "A more responsible version of Tony Stark has to save the galaxy, and his elite strike team consists of a circus acrobat, the Dalai Lama, Commissioner Gordon, Seven of Nine, and David Bowie." (I'm putting that on cards and using them for my table pitch at the next con.)