Wizards of Waverly Place (2007) - 6 mistakes in whole show

Revealing: When Alex's uncle comes to visit, Alex and her uncle are in a scoreboard watching a basketball game. Alex's uncle says a spell where everyone's head spins around, and you can see they are fake heads.

Plot hole: In the episode "First Kiss," Justin has a girlfriend, Miranda. But eight episodes later, "Pop Me And We Both Go Down," Justin starts dating this new girl from his class, who's actually the same Miranda. This doesn't make any sense. How is she a new student and how could they just meet if they were dating eight episodes ago?

Continuity: In "Beware Wolf," Justin's shirt changes from the park, where it is a checked shirt, to his house, where it is a striped shirt, and again from his house back to the park.

Continuity: In the episode where Alex tells Harper she is a wizard, when Harper is eating the kettlecorn, she drops it on the floor. In the next shot it vanishes.

Continuity: In the first episode where the Emergency Wizards appear, you can see that the Goblin has 4 legs. Every episode after that with the Emergency Wizards in it, the Goblin has 2 legs.

Continuity: In "Beware Wolf," Justin messes his hair up (spiky and brushed back) after dunking his head in the potion, but in the next shot his hair is all flat and down again.