When a classic movie gets a new home video release, the prospect of a brand new surround sound mix sounds fantastic, until you realise that the majority of these films were originally recorded in either stereo or mono. As a result, an entirely new soundscape needs to be created, and if the original sounds have not been archived, sound editors will need to go about re-creating them from scratch or from whatever exists in the current library. The most egregious and frequently-cited example is in Steven Spielberg's Jaws, a film that hasn't so much had its audio remixed into 5.1 as it has been grossly tampered with. Watch the above video and compare the vibrant mono mix with the positively dull, unexciting surround equivalent. The difference is staggering, and considering one of the three Oscars Jaws won was for Best Sound, it seems like a bit of an insult. Given how hands on Spielberg usually is, it's a surprise he signed off on it, considering this is the version of the film that most people will now be growing up with.