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)
The Ringer - S1-E1
Continuity mistake: Zelda has an amateur magician grow a large plant for her to use as a sling shot. He is standing beside Link as it grows and then suddenly disappears between shots. There was not enough time for him to have walked or run away. (00:11:40)
Kotsuban uranai! Ranma wa nihonichi no oyomesan - S1-E14
Continuity mistake: Panda Genma gets bumped off the podium by Tofu's mom, and his head crashes into a door panel towards the base. In the rest of the scene his head sticks roughly in the middle of it. (00:15:40)