Tomb Raider (2001)

Continuity mistake: During the temple fight with the stone warriors, Lara us shown fighting with both her pistols. In the shots from the front, her right pistol is held lower than the left one. However, the shots from the rear show both pistols held level with each other. This happens a couple of times throughout the scene.

Guy

Plot hole: About Lara's getting inside the Cambodian temple, how exactly does plucking off a flower activate a mechanism that opens a secret entrance to it? (Over the centuries, none of those flowers ever withered or was plucked off by the wind, of course).

Continuity mistake: If you compare Lara's braid during the film and her "open" hair during the last scenes you can see that her braid is actually a bit longer, which shouldn't be possible because braiding shortens the length.

Continuity mistake: When Manfred Powell and Alex West enters the temple in the forest, they are close to each other but in the next shot, Manfred enters before Alex.

Dr Wilson

Continuity mistake: When Lara meets Powell in Venice, his cigar switches from his left to his right hand between shots.

Continuity mistake: In Cambodia, when Lara spots the second little girl, her plait is over her right shoulder, and in the next shot, it is down her back.

Factual error: Here's the basic plot: every 5000 years, the planets align (viewed from "above" and the side). The last time this happened, a meteor fell to the Earth. The metal from the meteorite was used to make a Mystical Device, which can Stop Time, Give Great Power, and Do Other Things that require capital letters for emphasis. Without drawing this into a boring scientific lecture, I'll provide one aspect that would destroy the plot significantly; Pluto's orbit is tilted by a whopping 17 degrees from the plane of Earth's orbit (technically called the ecliptic), which is huge compared to the size of the planet itself. Check out http://seds.lpl.arizona.edu/nineplanets/nineplanets/plutodyn.html.