It’s official – I can no longer tell the difference between fan film trailers and Hollywood trailers. The extraordinary snippet of film below is a teaser for a soon-to-be-released fan movie of Left 4 Dead. But I challenge you to spot the joins here. I mean, unless they’ve a person stood on someone else’s shoulders, holding a third man upside down by his trouser legs, it seems like they have a crane. Are you still a fan film if you’ve got a crane? Surely you’re just a film at that point? In other words: wow.