Shia lebouf was just interviewed on Conan O'Brian. He talked about the special effects of the movie and the big world-record making explosion. The clip they showed was when Sam & Mikala were in the battle in egypt. They were in the hut when an insecticon crawled in through a hole. Then Sam grabs it and pulls it apart (as seen in trailers). Starscream then rips the roof off the hut and Sam and Mikala run out and onto the roof of the hut. Just as they reach the top, Scrapper smashes a side of the hut with what appered to be a mace or flail. Sam and Mikala the ran, and jumped off of the roof of the hut just as it explodes (also seen in trailers).