What hath Ian MacKaye wrought? 

As leader of the great and seminal (Don't believe me?  Look it up here and here) punk band Minor Threat, Ian wrote a song way back in 1981--I think Taft was President at the time--called "Straight Edge."  In the song he celebrates his own choice not to drink, smoke, or do drugs; his straight edge. 

Quite unintentionally, at least according to what MacKaye has said in the past, the song took on a life of its own and became a rallying cry for many young people nationwide.  Since then, the straight edge "movement" has taken on a life of its own and now means many things to many people.  Some in the abstinence movement have, apparently, even latched onto the straight edge concept.

Tonight, the National Geographic Channel premieres a documentary on adherents to the straight edge lifestyle.