This video could have been great. It shows the kind of thing a prospective buyer of a brand new console wants to see: menus, commands, switching between programs. The nuts and bolts of your every day experience.
It's a shame, then, that Microsoft decided to take such a "real" premise and make a staged advertisement out of it. Had this been captured and clearly marked as "in the field", it would have been awesome! But presented as it is, we get an idea of how this stuff looks, but not a definite idea of how it performs.
Meet Xbox One [Microsoft]