The difference between a good trailer and a great/legendary trailer lies not so much in what the trailer contains but rather in what it does. The new Star Wars trailer does more than simply remind fans of why they might want to see the movie, it creates demand for something they didn’t realize they wanted. The opening shot of the trailer, a land speeder glinting in the desert sun as it passes first a downed X-wing and then the derelict hulk of a star destroyer creates instantly a sense of place and time, it generates a question to be answered. How did the enormous spaceship come to this place. Who is passing in front of it? Where and when is this exactly? The place is familiar but different (Jakku instead of Tatooine). The time is clearly after, a period moved on from what we know. There are echoes of what came before - the mysterious and already much-disected pronouncement from Luke Skywalker, the storm-troopers, and of course the double cameo in the final shot - b...