Continuity mistake: In the beginning, Carly gets a bowl and fills it with popcorn up to about 2/3 full. The camera cuts to Sam, then back to Carly, and the bowl is barely full. The camera goes back to Sam then to Carly again, and the bowl is 2/3 full again. Freddie walks in, and the bowl is barely full again, which Carly now fills with popcorn.
Burple Nurples/Shnitzel Makes a Deposit - S1-E2
Continuity mistake: In "Burple Nurples", Chowder is showing Gorgonzola the Burple Nurples, and there are houses and shops not too far behind Gorgonzola. Later, the camera zooms out, and the buildings are missing.