The 'Cosmic Collections' crowdsourced web mashup competition I ran was picked up by two very cool web developer sites, the Yahoo Developer Network and the Programmable Web.
Yahoo Developer Network: A new API and hack competition – this time not from a tech company but by a museum!
Programmable Web: Science Museum Opens API and Challenges Developers to Mashup the Cosmos
Two favourite quotes: a "crusade to bring museums out into the open as places of innovation rather than preservation" (Yahoo) and, "with the rollout of a new API to provide access to information about some of its exhibits, the museum itself has become an example of technological innovation" (Programmable Web).