I was looking at a copy of 55 Days At Peking on a dvd purchased from ebay ( an all region version from Hong Kong). The film was widscreen with a passable video image - certainly better than vhs, but the nice part was a Dolby Digital trailer, one titled 'Egypt'. It was great to listen to and check out my system and was the last thing I expected to see on such a disc. I also have a few Dolby Digital/AC3 laserdiscs and two have the 'City' trailer on them. I will have to go through a few dvds and laserdiscs and see how versions I have. Which leads me to ask how many different trailers are out there? I also noticed on a recently released dvd ( I can't remember which one as I bought a few ) that had a new THX trailer, any thoughts on this?