Ok in the episode of Rocket Power called the Blader Bowl, the one where Mad Town skate park opens a new bowl for rollerbladers, Sam mistakenly gets the credit for Otto's moves on the local news. That isnt the slip-up though, its part of the plot. So at the taping of another show on the Blader Bowl the news wants Sammy to perform again but he can't so he asks Otto to do it for him. Otto agrees and skates. However during the scene where Otto is skating in the bowl the animators look like they can' decide who the person is. It keeps going from Sammy's bald back of the head with little dots on it to Otto's clean-shaven back of the head. Not too major but kind of confusing if you are paying attention.