Some of the box office blockbusters hide something from us when we see them on the big screen: mistakes. 

Since we are so focused on the plot and the special effects of the film, we rarely notice errors and mistakes in the movies. Did you knwo that New Moon has 29 mistakes? Or that Harry Potter had 71 mistakes?

Every year the web Moviemistakes makes a list of all the movies and their errors from that year. 

In Harry Potter you will be able to see set crew in the scenes as well as glasses without lenses. In New Moon it is easy to see the Volturi's contact lenses (especially Jane int he elevator), and Jacob's tattoo is in one position in the first scene and in a different position in the next. Also, Bella's hair style changes from one scene to the nexrt....

The movie with the most errors goes to Zac Efron's movie, 17 Again which had 94 mistakes.