#12: The “King of the World!” – Titanic (1997)
Initially, various scripted lines were tried for the moment Jack and Fabrizio stood at the bow of the Titanic, but none felt right. Director James Cameron suggested that DiCaprio simply shout, “I’m the king of the world!” Although DiCaprio was hesitant, he delivered the line with full enthusiasm, and it went down in cinema history.

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