Will Smith wins his first Oscar after onstage slap.

Twenty years after his first nomination, Will Smith finally won his first Oscar.

Will Smith won his first Oscar for his role as Richard Williams, father of tennis superstar Serana and Venus Williams.

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Earlier that night, Will slapped presenter Chris Rock after he made joke about Smith's wife.

Jada Pinkett Smith is Will Smith's wife and was from alopecia which causes hair loss.

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Comedian Chris Rock made a joke about wife Pinkett Smith's shaved head which made Smith angry.

Smith angrily yelled at Chris Rock twice to "Keep my wife's name out of your f...ing mouth."

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Smith thanked the Williams family "For entrusting me with your story'.

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"I want to apologize to the academy. I want to apologize my all fellow nominees'. Smith said "Love makes you do crazy things."