It is now known that the NBC program "Late Night with Jimmy Fallon", when it can, often hosts some of the most anticipated video games of the moment: this time to arrive between American TV studies was Halo 4 with the same view demo at E3 in Los Angeles, played by Fallon in person with much irony and adrenalin and commented at the same time from a developer of 343 Industries. You can find the movie below.