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Chin Ho was originally dismissed from the Honolulu Police Department after being falsely accused of taking bribes. Steve chose him for the task force because he didn't believe the accusations, and because Chin Ho was his father's former partner. It is later revealed in the latter half of season one that Chin's uncle was the one who was involved (to pay off medical bills where Chin became a fall guy who took the blame, where he was protecting his extended family) which resulted in his reinstatement to HPD as a Lieutenant.
Robert Loggia, Clyde Kusatsu, Patty Duke, Al Harrington, George Takei, Edward Asner, Don Stroud, Dennis Chun, and Jimmy Borges appeared on the new and original versions of Hawaii Five-O. Asner is interesting in that he reprised his character from the original series, art thief "August March".
Alex O'Loughlin and Scott Caan were born just a day apart. Alex in Canberra, Australian Capital Territory (A.C.T), Australia, and Scott in Los Angeles, California. Since Australia is one day ahead of the United States, they were essentially born on the same day.
This show premiered on September 20, 2010, forty-two years to the day from the premiere of Hawaii Five-O (1968).
During the opening credits, the camera zooms in on McGarrett (Alex O'Loughlin) standing on a balcony. It is the same balcony, on the same building, on which McGarrett (Jack Lord) was standing during the opening credits of Hawaii Five-O (1968).
When CBS announced this series for the fall of 2010, they released the opening credits from the pilot online. They featured an electric guitar version of the classic theme, and it was met with positive results. Producers revealed they hadn't decided whether or not to use it on a permanent basis, so they decided to stay with the classic. They brought in a full orchestra to re-record it, and three of the members had even played on the original. The electric guitar rendition of the Hawaii Five-O theme song was later used on promotional advertisements.