Films about drugs

In our purposed film the main influence that pushes the plot is drugs. So therefore I thought this would be a good starting point in my research, looking at previous films and how the interpret the use of drugs and the ways they portray the effects. On Wikipedia I found a list of films involving drugs and here is a shortened list of the films involving LSD that I am going to look at in further detail:

• A Name of Evil (1973)
• Across the Universe (2007)
• A Home at the End of the World (2004)
• Almost Famous (2000)
• Apocalypse Now (1979)
• The Big Lebrowski (1998)
• BongWater (1997)
• Bully (2001)
• Conspiracy Theory (1997)
• Day Maker (2007)
• Flirting with Disaster (1996)
• Gambling, God and LSD (2002)
• Harvard Man (2001) 
• Majic Trip (2011)
• Shot List (2009)
• Taking Woodstock (2009)
• The Tingler (1959) - The first featuring LSD
• The Guard (2011)

(Wikipedia)