A Galaxy-Sized Observatory For Gravitational Waves
With a sufficient number of pulsars there should be a pair such that a line between the two is sufficiently tangential to a gravitational wavefront to allow for coincidences to be detected in a period substantially shorter than a human lifetime.
I would be most surprised if the experiment was not designed so that this period should be less than the life expectancy of the lead researcher, less the median Nobel lag in Physics.
2007 Hugo Award Winners Announced
Most of them anyway - the Stross is a link to buy the ebook for a silly price, so why not try Accelerando instead, which is free, or any of a bunch of stories on his site.