I mostly just know of the usual comedy sync-tracks like MST3K and its successors in Rifftrax and Cinematic Titanic.<p>Also, if you&#x27;re at all a fan (or not) of the Harry Potter movies, there&#x27;s a great alt audio track called &quot;Wizard People, Dear Reader&quot;.  For that one, you either turn off the audio in the movie (or at least turn it way down so you can still sorta hear the music) and play the alternate narration.  The premise is kind of the story as told by someone who&#x27;s never heard the actual narrative, but I think the humor shows that he was at least a bit familiar with it.