I finished watching everything on the 2 disc set of Michael Bay's Transformers, and in the Trailers menu located on the second disc, only the Transformers Trailer 1, 2, 4 are listed in the menu screen. For those that don't remember, Transformers Trailer 3 is exactly the same as 4 except with the added "transforming sound" when Optimus transforms. This is disappointing, as Trailer 3 is the best of all the trailers specifically due to the "transforming sound" Now I'm not saying I wanted the transforming sound throughout the picture, I felt the movie was fine as is. I just remember the excitement I had I first saw Trailer 3 in the movie theater. Also the Iron Man trailer is on Disc 1 after you watch the movie all the way through, a new menu will appear with the Transformers Teaser, and Iron Man trailer.