Hollow Man (2000) - 10 major mistakes

Factual error: The serum is transported by blood. Hair has no blood traveling to it, only the root. So, unless Bacon shaved his body clean, his hair wouldn't have become invisible, as wouldn't all of the fur on the gorilla.

Continuity: Why does the Twinkie Kevin Bacon eats disappear immediately? If things that go into him disappear, when they give the needle to the gorilla, you shouldn't see the needle point when it is stuck in her arm.

Continuity: At the end of film when Elizabeth and her lover are escaping from Sebastian in the hall, Liz turned on the fire alarm and everything became wet. But after that, they, and their clothes, are dry.

Factual error: When they make the gorilla visible again, her heart becomes audible at the same time it becomes visible. This happens with Kevin Bacon as well.  But that shouldn't happen, because it was just invisible, not inaudible. And it wouldn't make a noise like that unless you were listening through a stethoscope.

Continuity: At the beginning of the film, a phone conversation tells us that it will be morning soon and Kevin Bacon will meet them at the lab first thing in the morning. Yet when they show the car driving on the highway to the lab, all of the shadows are straight down.

Factual error: When they put the gorilla back into the cage in the movie, who is said to be female several times, you can spot that it has a silver back. Female gorillas do not ever have silver backs - it's strictly a male thing.

Continuity: When they try to make Kevin visible, they use a blue spray to see his vein (like they did to the gorilla). but you never see the blue mark again...

Continuity: When Elizabeth Shue and her boyfriend are locked in the freezer, the camera keeps cutting back to the thermometer which is visibly and rapidly moving downward. However, it doesn't seem to have moved at all while the camera is not on it.

Continuity: When they're pouring the "goo" on Kevin Bacon to make the mask, some of it gets on the end of his breathing tube. When they change shots, it is clean again.

Continuity: When the veterinary is throwing blood to stain Sebastian, she stains her left breast. A few seconds after, there's no stain.