The Memento Project won the 2010 Digital Preservation Award in London on December 1, 2010. The DPA is sponsored by the Digital Preservation Coalition, and the Memento Project is sponsored by the Library of Congress (see also: LC's project page).
Details about the DPA are provided in several press releases, including ones from the DPC, ODU, LANL and LC. DPC has also posted a short video of an interview with Herbert. And for posterity, the original tweet from William Kilbride announcing the winner (more information from the award ceremony will be announced on #dpa2010).
Thanks to the DPC, the DPA judges, the Library of Congress, and everyone on the Memento team!