Factual error: During the scene where everyone runs outside, the Statue of Liberty head crashes into the street. The head is scaled too small and its size can be compared to the people taking pictures. In real life the statue head is large enough for people to walk into (17' from chin to cranium).
Audio problem: When the Statue of Liberty's head strikes the top of a distant building before landing in the street, sight and sound are simultaneous. There should have been an audible lag in the sound due to the speed of sound being only about 1000 feet per second. The absence of this lag would be acceptable in most movies but is inconsistent with the amateur home movie theme of Cloverfield.
Continuity mistake: In the scene where Hud, Jason, and Rob are hiding in the grocery store, you can see several items toppled over on the shelves above Jason's head. When the lights start to flicker, you notice almost all the objects are now standing upright, only to be toppled over again.
Trivia: The viral marketing story is incorporated into several parts of the movie. The first is the Slusho! shirt worn by Jason, given to him by Rob. Rob is leaving to work for Slusho! in Japan per his myspace account. Slusho! is owned by Tagruato Corporation, a company whose primary operations is off-shore drilling rigs. The company's logo is visible on the Tanker that is on fire during the Brooklyn Bridge scene. The Easter eggs show the destruction by the monster of Tagruato's Chaui drilling facility located about 2,000 off-shore of NY. The online viral character Jamie is seen passed out on the couch at the party. Her boyfriend, Teddy, who works for Tidowave, is seen on the bridge. Tidowave is an anti-Tagruato operation. At the end, while the camera looks over the Atlantic ocean, you'll see a falling object. The producer, JJ Abrams, has stated that this can be interpreted one of two ways: It's the monster falling out of the sky, or, a satellite which Tagruato reported on their website that they were actively assisting the Japanese government to locate.
Question: We all know that Marlena is bitten by one of the smaller monsters in the subway. When the group finds the military hospital, Marlena is escorted behind a curtain because of the bite. We see blood suddenly spray onto the curtain, meaning there was a small explosion to kill her. Was the explosion caused by the monster bite, or did the military have to do it to her?