"One Direction" is not just another popular boys-band. It is the surreal phenomenon that a person experiences once in his/her entire life. The band consists of five members -- Harry Styles, Niall Horan, Zayn Malik, Louis Tomlinson and Liam Payne. In the One Direction's film "This is Us", they come across as boys next door but to their millions upon millions of fans, they are the idols wearing the iridescent halo. The fans, mostly consisting of teenage girls, cry themselves hoarse when they spot the five members of the band and display stalker like tendencies. At "One Direction" concerts, it is normal to see sane teenagers turning into hysterical fanatics and crying. Channel 4's documentary "Crazy About One Direction" calls these fans "the rare breed."

These passionate teenage girls, according to Channel 4, have dedicated their lives to follow the five boys of the band and their money, as well. They are "united in their love of the most popular boy band in the world."

These "rare breed" of fans forget that they have a life and camp out days before a concert and "One Direction" events. They camped out at the London's Leicester Square much ahead of "One Direction" movie premiere on Tuesday. According to BBC, 'This is Us' premiere was the "biggest premiere that London has seen since in years, with thousands upon thousands of fans crammed around the red carpet and beyond." There were hundreds of teenagers wielding the placards.

According to the Channel 4's documentary, these fans are very much capable of displaying their darker obsessive side. In the past, they have sent death threats to girl friends of band members and to get noticed and be in the same room as the members, they have threatened to cut their limbs and kill kittens.

In the 'Crazy About One Direction' documentary, a pink-haired girl is asked where all she had waited for band members Harry, Niall, Zayn, Louis and Liam and one can hear her reply, as quoted by The Telegraph, "Harry's house, Louis's house ... They say I'm a stalker, but I don't mind." The documentary shows the fans queuing at concert halls, car parks and hotel lobbies.

If Channel Four's documentary "Crazy About One Direction" is about the fans that have made One Direction a once in a lifetime phenomenon, "One Direction" 3D movie "This is Us" is about the band members. The movie, which premiered in London on Tuesday, features the unseen footage of the five members of the band. Each and every movement of Harry, Niall, Zayn, Louis and Liam, both on-stage and off-stage, are shared on Twitter and on other social networking sites. There is not much that comes under the category of 'unknown' for the fans of "One Direction." The meteoric shot to fame, however, has covered the band members into a thick layer of gloss, hiding the real, which the movie "This is Us" promises to reveal.

Directed by documentarian Morgan Spurlock, 'This is Us' captures the meteoric rise of the band, three years after coming third in the British music talent show, 'X-Factor'. Simon Cowell's record label Syco signed the five members of "One Direction" and scripted the surreal phenomenon. The Telegraph's Robbie Collin writes in his review: "Cowell pops up towards the start of the film to marvel, with an admirably straight face, at their entirely organic rise to stardom."

"This Is Us is constructed like an episode of The X Factor, with 3D performances from their Take Me Home concert tour (96 arena dates down and still rumbling onwards) broken up by ersatz candid footage."

In his "This is US" movie review, Justin Lowe of The Hollywood Reporter writes "The concert scenes represent fairly standard fare, with 3D visual effects adding a touch of hyper-reality."

"Individual interviews with the singers create a more intimate vibe, with discussions ranging from their musical influences to expressions of homesickness and awe at their rapid rise to popularity."

Caroline Frost of The Huffington Post writers in her review : ... "This is Us" simply accepts "the idolatry as given, and contents itself with demonstration rather than discussion."

" Cue lots of scenes of boys dashing on a plane to meet hordes of girly fans, said girly fans screaming and weeping so hard all the autographs run, and then five boys hiding from them in hotel rooms and corridors."

"There's something vaguely disturbing about Niall and Liam's delight in controlling a crowd, waving the hordes up and down like an audio Mexican wave according to their whim, and the girls' contentment to conspire, but any sinister undertones about the responsibilities of such power are left firmly on the cutting room floor ..."

Geoffrey Macnab of The Independent writes in review: "Morgan Spurlock's 3D documentary about One Direction has just enough grit and insight to stop it seeming like simply a glossy promotional vehicle for the boy band phenomenon."

"The documentary is by turns revealing and strangely evasive."

There is not much footage related to sex and drugs in "This is Us."

"There's not much in the way of sex and drugs when One Dimension go on tour. Although the girls adore the band and respond to them with hysterical enthusiasm during the concert sequences (very effectively filmed in 3D), the band members' own love lives are strictly off limits," writes Macnab in his review of "This is Us."

"One Direction" 3D Documentary "This is Us" London Premiere Videos

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