There's a guy who comes into my work who is a dead ringer for J.G. Ballard. Every time he walks in, I find myself on some semi-conscious level contemplating telling him how much I enjoyed reading his books as a teenager. Then he opens his mouth and says,
"Yeah, g'day, mate. 'Ows it goin'?"
And the illusion is shattered.
Bruce Sterling talks about the real, non-ocker J.G. Ballard at Ballardian.