Changes

A popular movie from 1985 in which the main character Marty McFly ([[Michael J. Fox]]) goes back in [[time]] to 1955 with the help of his scientist friend, Doctor Emmet Brown ([[Christopher Lloyd]]) and a time machine built into a [[Delorean]] DMC-12.  It led to two sequels and an animated television series. It was one of the highest grossing films of the 1980s and is still popular today.

'''''Back to the Future''''' popular movie from 1985 in which the main character Marty McFly ([[Michael J. Fox]]) goes back in [[time]] to 1955 with the help of his scientist friend, Doctor Emmet Brown ([[Christopher Lloyd]]) and a time machine built into a [[Delorean]] DMC-12.  It led to two sequels and an animated television series. It was one of the highest grossing films of the 1980s and is still popular today.

==Positive and Negative Cultural Memes in ''Back to the Future''==

==Cultural impact of ''Back to the Future''==

This extremely popular film exerts an undeniable influence upon American culture, even being selected for preservation in the United States [[National Film Registry]] by the [[Library of Congress]] as being "culturally, historically, or aesthetically significant".<ref>[http://www.loc.gov/film/nfr2007.html National Film Registry 2007,Films Selected for the 2007 National Film Registry]. Retrieved on 4 February, 2008.</ref>

This extremely popular film exerts an undeniable influence upon American culture, even being selected for preservation in the United States [[National Film Registry]] by the [[Library of Congress]] as being "culturally, historically, or aesthetically significant".<ref>[http://www.loc.gov/film/nfr2007.html National Film Registry 2007,Films Selected for the 2007 National Film Registry]. Retrieved on 4 February, 2008.</ref>

However, the viewer should be selective in watching the film, as both positive and negative values are presented.  The viewing of this film by sub-adults should be accompanied with parental guidance, highlighting which behaviors should or should not be emulated.

However, the viewer should be selective in watching the film, as both positive and negative values are presented.  The viewing of this film by children should be accompanied with parental guidance, highlighting which behaviors should or should not be emulated.

===Negative Memes===

===Negative values===

*Various vulgar expressions: Biff's exclamation upon crashing into the fertilizer truck, Marty's jibe regarding Doc's concern about his future.

*Various vulgar expressions: Biff's exclamation upon crashing into the fertilizer truck, Marty's jibe regarding Doc's concern about his future.

*Promotion of youth culture with implications of adult inferiority:  when Marty's band performs a loud rock song which the judges (including [[rock music]]ian [[Huey Lewis]] in a cameo role) are not "cool" enough to appreciate.   

*Promotion of youth culture with implications of adult inferiority:  when Marty's band performs a loud rock song which the judges (including [[rock music]]ian [[Huey Lewis]] in a cameo role) are not "cool" enough to appreciate.   

*Premarital sexual activity: when Marty and Jennifer plan to spend the night at the lake alone

*Premarital sexual activity: when Marty and Jennifer plan to spend the night at the lake alone

===Positive Memes===

===Positive values===

*Dedication and friendship:  Doc and Marty stick together and show genuine concern for each others' well-being.

*Dedication and friendship:  Doc and Marty stick together and show genuine concern for each others' well-being.

*Health effects of [[alcohol]] and [[tobacco]]:  when Marty discourages the 1955 Lorraine from smoking or drinking, saying that she might regret it, and when the 1985 Lorraine is shown suffering ill-effects from alcohol at the start of the film, but healthy and attractive at the end of the film when she has been positively influenced by "Calvin Klein"

*Health effects of [[alcohol]] and [[tobacco]]:  when Marty discourages the 1955 Lorraine from smoking or drinking, saying that she might regret it, and when the 1985 Lorraine is shown suffering ill-effects from alcohol at the start of the film, but healthy and attractive at the end of the film when she has been positively influenced by "Calvin Klein"