Richard Denning, who had recently retired to Hawaii, came out of retirement to play The Governor.
Det. Steve McGarrett:
Aloha. Aloha, suckers.
In the now-famous scene from the opening credits, Jack Lord is shown from a helicopter shot on a balcony atop the Ilikai Hotel, then turns to the interior of the suite. The scene cuts to an interior shot making it appear that he turns directly from the balcony to face the camera after the cut. Actually, based on the scenery behind him, the interior shot had to have been made in a suite on the opposite side of the hotel.