Please feel free to add more, as I'm sure I'd love to hear them.
  1. Amy Winehouse, "Wake Up Alone" [Sex/ Love Addiction; Alcoholism]
    Best lyrics ever. Ever! The stripped-down version on "Lioness" is almost too vulnerable to listen to.
  2. David Bowie, "Ashes to Ashes" [Narcotics Addiction]
  3. Beyoncé, "Crazy in Love" [Love Addiction; Codependence]
    Antony Hegarty did such a brilliant job of bringing out the inherent insanity and obsessiveness of this song that Bey herself ended up imitating his version!
  4. Blur, "Beetlebum" [Heroin Addiction; Sex Addiction]
  5. Johnny Cash, "Cocaine Blues" [Cocaine Addiction]
  6. Portishead, "The Rip" [Heroin Addiction]
  7. Rolling Stones, "Can't You Hear Me Knocking" [Heroin Addiction]
    Why are so many of the best addiction songs about heroin?
  8. Notorious BIG, "Suicidal Thoughts"
    This one doesn't contain specific references to a particular addictive behavior, but in the context of every other Biggie track, it's got to be one of the most chilling "end of the road" addict songs ever recorded.
  9. Magnetic Fields, "Infinitely Late at Night" [Alcoholism]
  10. George Jones, "Out of Control"/ "A Drunk Can't Be a Man"/ "If Drinking Don't Kill Me (Her Memory Will)" [Alcoholism]
    George Jones could pack all the detail of a Raymond Carver short story into a two and a half minute country song. "Out of Control" is particularly terrifying.
  11. Elliott Smith, "Pretty (Ugly Before)"/ "Needle in the Hay"/ "The White Lady Loves You More" [Heroin Addiction]
    And about 100 more.
  12. Nilsson, "Can't Live if Living is Without You" [Codependence]
    The greatest, most explicit codependent anthem of all time. Just laying it all out there in that chorus!
  13. Rilo Kiley, "Does He Love You?" [Love Addiction]
    The definition of a "tearjerker" for me.
  14. Metallica, "Master of Puppets" [Heroin Addiction]
  15. Lana Del Rey, "Cruel World" [Sex Addiction, Love Addiction, Alcoholism, Codependence, Everything Addiction]
    The Ascendant Queen of Addiction Songs.
  16. Neil Young, "The Needle and the Damage Done" [Heroin]
    Suggested by @sloan
  17. Ray LaMontagne, "Jolene"
    Kills me.
    Suggested by @HeatherQuinn
  18. Sublime, "Badfish", Herron
    Suggested by @brodhidharma