Chirphymium It's entirely possible that sending the audience out feeling lousy was intentional

ThedevilChoose When a movie has you begging for it to end not even half way through it's pure crap. We've all seen this movie and this characters millions of times, nothing new in it. Don't waste your time.

Bob This is one of the best movies I’ve seen in a very long time. You have to go and see this on the big screen.

Francene Odetta It's simply great fun, a winsome film and an occasionally over-the-top luxury fantasy that never flags.

kchiasson-77464 This mockumentary is as logical as implementing a strategy to protect against a sasquatch or jewpacabra invasion in your backyard.Realistically, if intelligent beings were capable of traveling interstellar distances and making contact with Earth for malicious reasons - the possibilities of what could happen are truly endless and there is a high probability that we would literally be helpless against an *attack* in every way, shape or form.The end. I saved you 1 and 1/2 hours.(Pray to whatever God you may believe in that this never happens.)

Theo Robertson We've all seen these alien invasion movies or read about them in novels or watched them on television shows , everything from THE WAR OF THE WORLDS to INDEPENDENCE DAY . It's such a common sub-genre of speculative fiction that it's impossible to believe that until the last decade of the 19th Century it didn't really exist within popular culture . Now it's so common that there is now the problem of bringing anything new to the subject . This docu-drama by National Geographic has a new take on an alien invasion because it's based upon 100 per cent scientific fact . A very bold statement but as we see a possible scenario of the days , weeks and months following an alien invasion I felt myself disagreeing with the ideas being put forward The story is told via talking head interviews from security experts and scientists inter cut with film footage and specially shot drama and action sequences . The drama starts with a succession of spacecraft appearing above the major cities of the world in a scene taken straight out of INDEPENDENCE DAY and very soon Planet Earth finds itself a victim of a massive electro magnetic pulse destroying all communication systems and within hours the technological weapons of humanity such as their air-forces have been defeated by alien fighting machines . Within days humanity has taken the unthinkable decision of using nuclear weapons on the invaders which contribute nothing except to destroy major population centres leaving the alien spaceships intact . As the months go by humanity resorts to guerrilla warfare in an attempt to beat the invaders who have come to Earth to plunder the world's resources No doubt there is a lot of scientific thought gone in to this but there is a major problem and that is WHEN ALIENS ATTACK is still only speculation . We have no idea if there's life on other planets and if it did exist we can only compare aliens with our own historical yardstick and therefore the aliens motives and behaviour seem a bit too human like . That said I also guess that if we didn't have the European type mindset of the aliens conquering of the new world we wouldn't have a story so this can be easily ignored . What is more difficult to ignore is how easily humanity adapts in to an effective guerrilla force . Someone mentions how good human beings have been at asymmetrical warfare through the centuries and indeed we have but only against other human beings . Likewise a guerrilla force needs constant supplies of weapons and equipment . The Vietcong received large supplies of weapons from the USSR and China while the mujudaheen in Afghanistan received large amounts of equipment from the USA , China and Pakistan . Here however with mankind's infrastructure being destroyed access to weapons would become more and more difficult in the long term . Not only that but having to struggle daily against an alien invasion would make food production very difficult if not entirely impossible so to hear " experts " claim that time is on mankind' side in an alien invasion seems contradictory . Likewise another expert saying that the only solution to winning is outbreeding the aliens seems to ignore that without modern civilisation the birth rate would decrease sharply and the majority of babies born would die without reaching infant stage . The advantage lies with the invaders in both the short and long termThis is a pity because I can see the producers trying to make the most realistic alien invasion movie ever made . I did enjoy it for the most part but everything is undermined by the hopeless optimism seen where Earth and the human race abide in the face of insurmountable odds . If the world was invaded by a greater civilisation I'm afraid the reality would be very similar to the lament given by a scientist in John Wyndham's 1950s overlooked sci-fi invasion novel THE KRAKEN WAKES " We might be giving the impression we're winning at the moment and might even inflict 100 per cent casualties on them but unless we find a way to take the battle to the alien home planet and destroy their means of production the aliens will eventually win "

evening1 Who knew that the United Nations has an Office of Outer Space Affairs set up to speak to aliens if they show up one day? Nor had I ever considered the extremely low odds of being able to actually communicate with an extraterrestrial. This film points out that we've had abysmal success in communicating with apes, dolphins, and other highly intelligent animals. So we're unlikely to establish meaningful dialog with advanced space travelers.I had never considered the probability (previously voiced by Stephen Hawking) that such visitors might be hostile colonizers. As one expert points out, biology here on earth tells us that intelligence and technical ability are often associated with aggression. (Consider that Germany was the most technologically advanced nation on earth in 1930, and look how that went.) The filmmakers convincingly use life sciences to predict what to expect in an attack and how mankind might respond. As the voice-over states in stentorian tones: "This is science, not science fiction!" This film's enactments of a possible alien takeover and the guerrillas who would fight back are interesting and compelling. (It's shocking to consider that worldwide civilization could be brought to its knees within hours, but this film might leave you believing it.) My only quibble is with the facile depiction of man's ultimate victory -- a balloon force enables suicide bombers to succeed where nuclear weapons had failed. This pollyannish scenario isn't explained well. Still, this is a very thought-provoking production.