Wonder Woman
This 2017 movie is FILLED with Christian imagery! Things like loving people instead of giving them the punishment they deserve and also a sacrificial death to save the lives of others. Wonder Woman would be a great discussion-starter with teens or adults.
A search of the internet show all sorts of articles that discuss the imagery and themes if you need a bit of help organizing your thoughts. Here is one from CBN: Five Theological Points in Wonder Woman We Can Agree On.
If you need help with discussion questions, you can search the internet for that, too. Here is one Bible study that looks at the movie and then talks about the Armor of God: Bible study: Wonder Woman.