its that movie when you put on these special sunglasses you can see the aliens living among us and all the adds have subliminal messages hidden in them. what the hell is the name of that movie.........

They Live by John Carpenter?

The glasses featured in the film have a lens called the Hoffman Lens. This is a reference to Dr Albert Hofmann, the man who first synthesized LSD.

The story is both science fiction and black comedy, dealing satirically with the perceived notion of a declining economy and the culture of greed and conspicuous consumption associated with the 1980s. It posits a world in which some of the "haves" (the monied elite or the yuppies) are in fact space aliens seeking to oppress the "have nots" (poverty-stricken Earthlings and the desperate middle class) through subliminal advertising in the mass media.

The film stars former professional wrestler Roddy Piper as a homeless laborer who falls in with a group of shantytown rebels who have invented special dark glasses that enable the wearer to see past the façade the aliens have constructed to prevent their detection. One of the film\'s more memorable scenes occurs when Piper\'s character dons the glasses for the first time, and notices that a billboard for what appears to be a computer company now simply blares the word "OBEY," while another billboard featuring a bikini-clad model urges the viewer to "MARRY AND REPRODUCE." He also sees that money bears the words "THIS IS YOUR GOD." The messages are, of course, meant to be subliminal, causing people to become complacent about solving societal problems, spend money, stay in debt, remain employed, and increase the population.