I almost missed this one, because it's been mentioned a few times in the Taskforce materials. But it definitely deserves a nomination.
Pool (http://www.pool.org.au) is the ABC's online collaborative media space. It's doing an excellent job of bringing Web 2.0 and interactive creativity to the national broadcaster, opening up opportunities for members of the public to interact with and contribute to ABC programming, and really breaking down the one-way street mentality that dominates traditional broadcasting.
In particular, Pool's GenePool project (http://www.pool.org.au/genepool) is worth mentioning. It's released 40+ items from the ABC vault (themed around evolution and Darwin) for reuse and remixing by the Australian public. It's one of the few examples of public broadcasters worldwide giving the material they create back to the public who paid for it. So Pool definitely deserves to be applauded.
Social Web