John Graham-Cumming, Les Hatton and Darrell Ince are all well known around these here parts. John Graham Cumming was quite prominent after Climategate for his critiques of the standard of CRU's computer code. Darrell Ince wrote an article making similar criticisms. Les Hatton was mentioned as the author of an article criticising the IPCC's handling of hurricane data.
The three of them have just published a new paper in Nature, looking at the issue of code availability and trying to address the question of how we can move to a world in which academic computer code is routinely made available.