Trivia for
21 (2008) More at IMDb Pro »

• Jeff Ma, the real life Ben Campbell, has a small role in the movie as a Planet Hollywood blackjack dealer.
  
  
• MIT wouldn't allow filming on its campus, so the movie was actually filmed at Boston University.
  
  
• The movie was used as a luxury prize for the contestants on the Big Brother 9 in the US. They played a competition involving blackjack, and the winners got to see a special advance screening of the movie. One contestant won a trip to Las Vegas worth $21,000, which included a three night stay at the same hotel the actors from the movie stayed in.
  
  

• Boston University students were used as extras in many of the classroom scenes.
  
  
• The "2.0.9" robotics competition shown in the movie is based on the actual "6.270" programming competition at M.I.T.
  
  
• The small statue of a reclining nude, seen on the desk of the Harvard med Professor Bob Phillips during Ben's Robinson Scholarship interview, is by Venezuelan-born sculptor Maria Gamundi.
  
  
• The problem Prof. Rosa mentions in class with the three doors is known as the Monty Hall problem.
  
  

• SPOILER: An alternate ending was shot, where Mickey Rose evaded capture from Cole Williams. After retirement, Cole spots Mickey gambling on a boat and the two trade stories about their past.
  
  

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