Other mistake: The battle droids - including the commando droids featured here - habitually have two broad fingers and a thumb. So how can a commando droid squeeze itself completely into clone trooper armor without its broad fingers tearing open the gloves, since it can't separate its fingers?
Land of Hold/Penny Henny - S2-E17
Deliberate mistake: When Garfield brings Jon to the broken TV, the scene's animation is still unrendered. (00:01:04)
Bat Mitzvah Crashers/Super Secret Weakness - S1-E5
Continuity mistake: In "Li'l Orphan Happy" when Ben makes his mom the tuna salad, it has lettuce around it, but in the close-up the lettuce disappears. When it gets zoomed-out on, the lettuce is back.
Triumvirate of Terror! - S3-E8
Continuity mistake: As the pie is flying towards Batman and the reporter, it is going with the food side first and pan side behind it. But when it shows it going to hit, it is suddenly flying pan side first. (00:05:30 - 00:06:35)
Iron Forged in Fire: Part One - S1-E1
Continuity mistake: After the plane explosion, a scene six months later is shown with Tony lying in bed with his chest piece now in that keeps him alive. The first shot shows it with some wire or designs of some sort protruding around it along his chest. Some of the ends overlap with the border of the central round piece. It then cuts to a closer view of the device as Tony’s alarm sounds, and suddenly the pieces do not overlap the circle at all, and some of them slightly change shape and position. (00:06:35)
Other mistake: When the Brotherhood steals Senator Kelly's Hummer, the Blob is sitting in the back. Blob is so heavy that he leaves holes in the ground when he walks, but the back end of the Hummer doesn't stoop closer to the ground when he's in it. (00:11:54)