ClassHook is a free service that can help you find video clips to support your lessons. The clips that you'll find in ClassHook come from well-known television shows and movies
In particular, “conversations” and “audio dropbox”. The “conversations” tool lets you pre-record one side of a conversation and then have students record their responses. It can be set up for them to practice first or to automatically record (no changes/re-recording possible). Note that if you set up a version that allows practice, their “practice” is never recorded and submitted to you...they must select “real time” after doing their practice versions and re-record to submit to you.