In the Frontline documentary "The Persuaders," (you can watch the whole thing for free on the PBS website), there's a quote that says, "Once culture becomes advertising friendly, it ceases to be a culture at all." The cyclical relationship between what we see on billboards and television and our identity as individuals and as a culture is increasingly becoming one in the same. Are we becoming more and more like what advertisements tell us we should be? If so how does that effect our cultural heritage and sense of self?
"The Persuaders," is definitely recommended viewing for anyone interested in the subject and as always Frontline does a fine job of presenting the issue.
http://www.pbs.org/wgbh/pages/frontline/shows/persuaders/