The large movement after the astronaut has passed seems quite obviously to be from the astronaut brushing the bottom corner, hence the motion of the flag is most pronounced there rather than any noticeable rippling across the length of the flag that would have resulted from a "wall of air". Further, the extended motion of the flag seems to be significant evidence of the action taking place in a vacuum, for which the largest ever built (i.e. the Space Power Facility in Ohio) seems rather small for the activities captured on film purporting to be of the moon landings. Given the preponderance of evidence that the technology existed to send men to the moon, it seems to me that it would be far harder to fake the landings, requiring far more people to keep secret about it (including the Russians) than it would be to have actually put a man on the moon. And that is without the photographic evidence of men having actually been on the moon (e.g. the instruments, the base of the lunar module, the rover, the tracks they took etc). Or without any of the other evidence that others have mentioned. Believing that men have not walked on the moon seems to me to be a childish fancy, having no place in serious discussion. It seems to me to be only those who have stepped beyond the realms of reasonable into unreasonable skepticism, or those who are looking to draw attention to themselves, that tread the path.