9. 'The Wolf of Wall Street' (2013)
While this is far from Martin Scorsese's best film, it contains some of DiCaprio's finest work to date, as real-life penny-stock kingpin and financial huckster Jordan Belfort. The director in recent years has alternated between epic fictions and major musical documentaries — and in some strange way, this is an unlikely combination of both. Belfort was famous for his rousing, take-no-prisoners, tent-revival-like speeches to his employees, and so much of this film is Scorsese just turning his cameras on Leo and watching him go — the Mick Jagger of Wall Street jag-offs.