In "The Wolf of Wall Street" Jonah Hill was every bit the star of this movie that Leonardo DiCaprio was and the latter has stated that the presence of Jonah Hill made every scene better because he brought a level of professionalism and focus to his roles that was unmatched. In "The Wolf of Wall Street" he brought his dramatic talent to the forefront in the role of Donnie Azoff as he was constantly improvising scenes and in the process helped make the movie a great dramatic success.
Jonah Hil in his audition/meeting with "The Wolf of Wall Street" director Martin Scorsese stated unequivocally that he knew who Donnie Azoff was and that no one knew this guy better than him and no one could play the role like he could. It was this initial meeting that convinced Martin Scoresese that he could play the part but he truly distinguished himself with his exceptional improvisation and the energy he brought to the set.
Both Jonah Hill and Leonardo diCaprio were nominated for Academy Awards but Leonardo DiCaprio would likely be the first to admit that his co-star's focus and ability to change a scene with his improvisation ability resulted in him having to raise the level of his performance to ensure that he was not left behind in scenes.
Jonah Hill demonstrated his superb acting range and focus in "The Wolf of Wall Street" and entertainment insiders expect a similar focus and ability to improvise in "22 Jump Street", the sequel to his successful "21 Jump Street" in which he was one of the co-stars and the writer of the movie. "The Wolf of Wall Street" was a great movie in large part due to Jonah Hill's performance and similar success will likely be enjoyed in "22 Jump Street" as Jonah Hill continues to display his exceptional emotional range, comedic timing and improvisation skills in his movie roles.