This video from SPN is so much fun! I'm totally geeky over anything with SPN's production and these little views of the actors just moments before "Action!" is called and then what happens after are truly a treat!
Btw, this immediately made me think of the opening credits for "The Fall" from 2006 and not just because they used the same music. After all, that movie began with looking at a movie production in the 1920s (an accident out on location involving a train, stuntmen, and a horse falling into a river) and it was beautifully filmed in slow-motion. Check it out HERE.
Anyway, nothing spoilery here, unless you haven't seen any of the Season 13 episodes to date.