Dazed and Confused
Before he was mega-superstar Matthew McConaughey, he was just a struggling actor with his first major role in the teenage coming-of-age flick Dazed and Confused. If you've seen this movie, you know that his best line comes when he simply says "Alright, alright, alright" in a southern drawl. This memorable quote came from a last-minute ad-lib by the young actor. The rest, as they say, is history.
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