17. Eminem "Crazy in Love" (2004)
Obviously, Eminem would turn a "Crazy" sample into a song about being a lovestruck lunatic. While Heart's single "Crazy On You" was more about being overly passionate, Slim Shady took it to the next level saying he was going insane over a girl. Heart went crazy enough to write something this emo; Em went crazy enough to become a stalker. See the distinction?
Heart "Crazy on You" (1976)