Crowdsourced Star Wars
Although this is a few weeks old, I just stumbled on it and love the idea. A few rabid fans have decided to remake Star Wars using user generated clips cut together. Simply go to their microsite, register for one of the 1100 or so 15 second clips and shoot your segment. Upload it to the site and the team will stitch together the entire film for all fans to see.
While this might seem incredibly geeky, I think this could become a huge idea. The amount of passion behind film and television creates niche groups who love this type of stuff. I can think of a dozen shows that would be fun to re-create in the 'real world' and hope that more sites like Star Wars Uncut sprout up in the near future.
Found via Socialgraph.