XMNR: The live-action webseries Halo 4: Forward Unto Dawn concluded Friday and if you haven't seen it yet, stop reading this right now and watch Part 5 here. Following the end of the episode, McFarlane Toys revealed a large and expensive resin statue that captures the final battle between Master Chief and one of the Covenant foes.
They need to put forth a movie, or series of movies, right away. Start with first contact and move on down to the end of Halo 3. It doesn't have to be Chief's story all together, but just tie everything together.