In the run up to Sunday night's award ceremony we have taken a look back at the films that have made Leonardo the Hollywood heavyweight that he is today.
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Leo impressed as a mentally disabled teenager in a small Midwestern town – earning the first of five Oscar nominations for acting and stealing the thunder of Johnny Depp, then the more established name.
Photo: Paramount pictures
An adaptation of counter-culture author Jim Carroll's memoir about drug addiction, this was the first of many films in which the actor played a real-life character
Photo: Metro-Goldwyn-Mayer Studios