Blooper

When Britt and Kato arrive back at the Reid mansion right before their brawl through Britt's rooms, it is night. But during the fight, daylight can be seen through a window.

When Chudnofsky is about to shoot Kato at point blank range his gas mask is raised off his face resting on his forehead. An instant later as he flies backwards it is covering his face. An instant later as he stands it is gone completely.

On the roof when Chudnofsky is telling Popeye about his new name "Bloodnofsky," there is a tree directly behind Popeye. When the camera position changes, the tree disappears, and then reappears later, several time.

When Kato and Britt are fighting in the pool house, Britt tumbles over the knight and knocks over the wooden weapon in his hand. The wooden weapon falls on the couch behind Kato. The camera changes from Kato to Britt and when it changes back to Kato, the weapon is gone.

When the police are after the statue-head thieves, one police car headlight is not working. After the police car crashes and flips, both headlights are working again.

The shot of the Green Hornet's car burning rubber after shooting the red light camera shows several identical "burn-out" marks in the street from previous takes.

At the start as the camera pans up to the hotel, there's a highway sign that has the words upside down, and the same thing for the name of the hotel.

When Kato and Britt are being chased by the police, the police fires a gun into the window of the car. Britt pushes the bullet out of the window and a sound is played of the bullet bouncing on the ground .

This is wrong because they are in a chase for speeding, at that speed you would not hear the first bounce let alone the second or third.

The sound does not match up with what is happening around them.