Revealing mistake: When Zack and Cody are tied up by the secret spy, when Cody is texting Bailey "Help Me" with his toes, you can see that the Mobile has a black screen, and is turned off. And he was just hitting random buttons with his toes.
Iron Forged in Fire: Part One - S1-E1
Revealing mistake: After Tony almost runs into a car after losing control, he flies back up and the road is still shown under him. That group of cars passes and after a brief moment of open road under him, a clone group of the exact same cars in the same lanes pass under him again before the shot changes. (00:16:45)
Revealing mistake: When Grievous falls to the ground as the Gungans throw plasma balls at him, the lance General Tarpals stuck through his torso blatantly clips through the ground. (00:15:03)
The Scorn of the Star Sapphire! - S3-E5
Revealing mistake: While in the fight with Major Disaster, the double yellow lines on the road are wrong. They are too thick and close together. (00:12:30)