When I fly long haul I get to use the in-flight entertainment system and on most flights they have the option to view the trailer for the film you are reviewing. This can be very helpful in tipping the balance. At home, when I have used other services which provide this option I find it helps either myself, or my wife, to decide if we are in the mood for the style of the film, something which is difficult to tell from just the synopsis and poster.
