[chokosaki]

Some easy movies to show would be some of the Pixar movies.

Pixar movies are very powerful and visually stunning. Take the movie Up for example. The beginning is very touching and you can understand the story even without the words.

Also, you could try Tom and Jerry or Backkom (a very popular 3d animated cartoon in Asia). There is very little dialogue most of the time (none in Backkom and little in Tom and Jerry). These can be great to add your own dialogue to as a class activity.

As for adults...it's definitely worth a shot for them. Adult students will appreciate the activities and movies more if you make it clear why they are doing it.