For your consideration, interesting MGS4 trailers:

They get weirder:



Also:

General TV-spot

Russian TV-spot

There seems to be a new trend of these high budget video game trailers, other examples being the Halo 3 live action TV-Spots and the Starry Night trailer.

Bungie (the company that makes Halo) has also made a series of TV-spots which interview fictional veterans of the Halo war. See Soldiers Reminisce, Hunted, Museum and Conclusion.

There is also a short film of a fictional war memorial, and another fictional documentary on how it was made. Also see the war memorial website, where you can scroll through the whole thing interactively.