Revealing mistake: In the intro, one of the scenes involves a revolver being loaded as the cylinder is spun. The bullet being loaded and all the others have already been fired - there's a firing pin mark on each primer. (00:00:55)
Continuity mistake: Throughout first season: Due to stock footage spliced in from the pilot film, McGarrett's '68 4-door Mercury sedan often peeled away from the Ionali palace and then turned into a '67 2-door coupe as it cruised down Honolulu's streets.
Audio problem: Throughout series: "Hawaii Five-O's" favorite sound effect was squealing tires, and the effect was nearly always added whether McGarrett's big black Mercury actually "peeled out" or pulled away at a normal speed. More than once, the tire squeal sounded when the car was sitting on beach sand. Nice trick - if you could do it. But alas, you can't "burn rubber" on a beach.
Deliberate mistake: Throughout series: Five-O was said to be Hawaii's state police force, and was shown headquartered in the Iolani Palace. For decades, tourists were disappointed to learn that in reality, Hawaii had no state police, and that the palace was a state museum, not a state police station.
Cocoon (1) - S1-E1
Other mistake: After the funeral, McGarrett walks up to his friend. You can see not only McGarrett reflected in the man's shades, but the spotlight illuminating him following him along the wall.
Cocoon (1) - S1-E1
Continuity mistake: As McGarret goes to call the cops, Brent removes the knife from the John Doe assailant's hand. As the angle changes, Brent takes the knife from the dead man's hand again.
Revealing mistake: McGarrett's office is on the 2nd floor. Yet the photo backdrops outside his windows in this episode show us a ground-level view of grass, streets and a building. This boo-boo vanishes in subsequent episodes, replaced with the more likely views of balconies, palm trees and blue sky. (00:08:00)
Continuity mistake: There's much too abrupt a transition between Reese falling into the water and his body suddenly being back on the dock. As there's no time lapse implied at all, he seems to reappear on shore by magic. At least a brief shot of the body being fished out of the water might have helped. (00:49:40)
Factual error: McGarrett places the kidnappers' ransom tape on the reel-to-reel recorder, and before the tape is threaded or the machine properly turned on, the message immediately starts to play. (00:13:35)
Factual error: Throughout this episode, the Japanese assassins are inaccurately referred to as "the Bushido." They should, as the episode title implies, be called Samurai. Bushido was the revered code by which Samurai warriors lived, but was never an appellation for them. (00:17:30)
... And They Painted Daisies On His Coffin - S1-E7
Continuity mistake: McGarrett strong-arms Tommy-Tommy, the Hawaiian fence, on the beach, and the guy gets sand all over his face during their scuffle. When McGarrett pulls him to his feet, the sand is still there. But in the next shot, all but a small patch near his temple has disappeared. (00:32:40)
... And They Painted Daisies On His Coffin - S1-E7
Continuity mistake: When McGarrett arrests Big Chicken at the end of the episode, he twists Chicken's right arm up behind his back, but then in the next shot, Chicken's arm is up above his head on the door in front of him. (00:49:10)
Twenty-Four Karat Kill - S1-E8
Continuity mistake: McGarrett gets out of his car wearing a gray suit, and walks into Dennisen's office wearing a blue one. (00:20:15)
Twenty-Four Karat Kill - S1-E8
Continuity mistake: When Andrea finishes wiping the test fluid from the gold bar, she holds it out with her left hand. After the cut scene, her right hand is holding the bar.
Continuity mistake: Throughout the episode, Larsen's first name is "Dan." But in the end credits, he's listed as "Steve." (00:49:00)
Pray Love Remember, Pray Love Remember - S1-E14
Continuity mistake: Danno walks several feet into McGarrett's office to make a report. Though there's no break in the dialogue and no time for him to have moved, the shot cuts and he's suddenly standing outside the door as they finish their conversation. (00:02:45)
Continuity mistake: Auston leaves the unconscious Dan Williams lying on his back. But in the next shot, Danno's lying on his side. Later, the seriously wounded Danno instantly changes positions between shots several more times, switching from face down to face up on the floor. (00:02:30 - 00:32:00)
Continuity mistake: When Ms. Karabinos is worried her father is dying, she is holding her face in her hands, but then her arms are suddenly down by her sides. (00:24:55)
Answer: He was fired. He never really appreciated his character. He felt Kono was portrayed as a big dumb Hawaiian and that the stereotype was racist. He also felt underutilized. He was fired after a heated argument with the show's publicist regarding his character. It seems there's not much details given regarding the incident or the firing, so it's seems possible he upset the show's producers as well.
Bishop73
No he said something derogatory about one of the Jewish producers that's why he was fired.