Continuity mistake: This is a mistake for the introduction from seasons 2-20 (1991-2009). When Homer screams, he turns round. You see this in a wide shot. There are no boxes to the right of the door in the garage. However, two just appear out of thin air when he runs through the garage. (00:01:50)
Continuity mistake: When Mario, Toad and Luigi are driving to the rebel fort, the seatbelts they are wearing disappear for most of the scene. (00:17:30 - 00:18:40)
Kiss 'N Tell - S1-E4
Continuity mistake: When the Witch of Walls grabs frog Link's tongue to inspect it, the first shot shows the hole in the wall from where she came out has vanished, then it's back again in the next shot. In the same two shots, her hands change from being right on top of his hand and left on bottom, to left on top and right on the bottom of Link's tongue. (00:10:25)
Chûgoku kara kita aitsu! Chotto hen!! - S1-E1
Continuity mistake: The water stains on Genma's gi when Soun turns him back into human form changes between shots. (00:18:40)
Continuity mistake: In the shot of the railway bridge after it collapses completely, look closely near the end of the tracks, and you'll see a small flame that was caused by the sparks. But in the next shot of the bridge, the flame has disappeared.