Lutheran Satire’s motto is ‘Teach the faith by making fun of stuff.’ They do a fantastic job of it, and you really should see all of their videos (and more).
Jehovah's Witnesses teach that Jesus was God's first creation, and not God Himself. This is rightly considered heresy, of course... but can you explain why they're wrong about the interpretation of John 1:1, where - they claim - Jesus is "a" god and not "the" God? Video, 5:30