I mention all this primarily because Google has recently unveiled a cool new resource: The Peanut Gallery. This website (you cannot access this on iPad, and it only works in Google Chrome) allows you to dictate language that will appear as "silent film" titles over any of a selection of over 12 old movie clips. The site uses Google's "Web Speech API" and is remarkably accurate. Just speak, and it will convert your speech to text within titles over the movie clip, which is then saved and shareable.
You can see one of my attempts at it here.
The Language Lens on this site, then, is that it provides you with many contexts to have students analyze situations (characters, settings, ongoing events) and generate narration related to this, which employs the interpretation of body language and emotions, as well as, potentially, metalinguistics such as sarcasm and understatement.
You will need to insert test dialogue (e.g. "Action" or "Oh no!") just to make the film proceed at first, so that kids get the context and can plan dialogue for a second or third try (or more), as improvising may be too difficult without your scaffolding.
Common Core Connection
CCSS.ELA-Literacy.RL.4.2 Determine a theme of a story, drama, or poem from details in the text; summarize the text.