Watching Movies in the Classroom: Yay or Nay?

So, it's right before Thanksgiving holiday, and several of my students have already said that they would be absent the Friday before.  I was trying to think of a lesson that wouldn't put too many of them behind, but that would still relate to what we are doing in the classroom and be fun at the same time.  I decided to show a movie that is full of figurative language, and somewhat relates to the novel we are reading since there isn't a movie based on this novel: Farewell to Manzanar.  I decided to show Chronicles of Narnia:  The Lion the Witch and the Wardrobe.  Both are during World War II, both have small girls as the heroine, and both include allusion, hyperbole, metaphor, symbolism, etc.  I have made out a question and answer sheet that uses all levels of  Marzano's questioning in hopes that my students can find the figurative language within the movie without my spoon feeding it to them.  My question to all of you teachers out there is...Are movies okay to show in class?  I don't want to be THAT teacher who "shows movies to her students."  But if they are having to think, is it okay?  If the movie is based on a book, is that okay since it is sort of an introduction to a classic that they may want to read on their own?  I want your opinion.