‘Trainspotting’, Danny Boyle’s commercial and cult hit that showcased drugs, friendships, youth culture, and the best movie soundtrack of the 1990s, turned 20 last year, and on the eve of its sequel, ‘T2 Trainspotting,’ which hits U.S. theaters in early March, Hollywood Reporter offers a modified oral history of the original film. The piece is a total nostalgic romp, from the actors’ deciding whether or not to do heroin in order to properly portray a heroin addict to the ultimate casting of Ewan McGregor and how to mollify American audiences unaccustomed to the Scottish accent.