Saint Alan the Greenspan has generally been a bit off-limits for public criticism, but the sub prime meltdown, which Greenspan was warned about and chose not to regulate, has been the wedge for not only criticism, but a (soft) reassessment of his whole tenure. I don't really feel qualified to weigh in on this, but check out Bob Kuttner for the harder version, and David Warsh, editor of Economic Principals, for the softer look.
