This show premiered on September 20, 2010, forty-two years to the day from the premiere of Hawaii Five-O (1968).
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.
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).
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".
When the show premiered in 2010, the character of Kono Kalakaua (Grace Park) was written to be a rookie cop in her mid-twenties. Park was 36 years old when the show premiered. Her character is supposed to be younger than Steve McGarrett (Alex O'Loughlin). In real life, Park is two years older than O'Loughlin.