The Puppet Masters (1994)

Revealing mistake: As Mary, Sam, Jarvis and Andrew are speeding away from the TV station, one of the boys from the UFO crashes his bike head first into the car. This causes the boy to crash through the window. When he does this the window shatters like a plate glass window instead of the safety glass that is a standard to be used for vehicle windshields.

Niven: It's the kid from the spaceship. Get him off the car.

Trivia: This is the second sci-fi/horror movie Donald Sutherland starred in about an alien parasite that takes over people's bodies and turns us into emotionless doppelgangers. The first was the 1978 "Invasion Of The Body Snatchers".