Factual error: The scene where Michael frantically arrives at the FBI headquarters, he drives the Contour up over the movable vehicle barrier. The movable vehicle barriers that are in place at the FBI headquarters, both pre and post 9/11, are steel ramp type barriers angled upward toward the entering car and lowered when needed. The ramps are about as high as the top of the Contour's hood and the Contour would have just gotten wedged under the opening of the barrier ramp. And there wasn't enough of a "ramp" in front of the barrier to floor it and jump the car over the barrier (ala Dukes Of Hazzard), hence the barrier system would really work.
Arlington Road (1999)
1 factual error
Directed by: Mark Pellington
Starring: Jeff Bridges, Joan Cusack, Tim Robbins, Hope Davis
Continuity mistake: In the scene where Tim Robbins is helping the kid of Jeff Bridges with his baseball practice, he is talking to Jeff outside of the practice area. He swings a little with a bat and then leave the bat resting on his left shoulder, then the shot is from a different angle and the bat is resting on his right shoulder.
Oliver Lang: I'm a messenger Michael, I'm a messenger! There's millions of us, waiting to take up arms, ready to spread the word... millions of us.
Michael Faraday: No! The government's not who you're killing.
Oliver Lang: Yes. Yes... they'll pay. They'll pay for their sins. Their lies.
Michael Faraday: You're killing children! Children die.
Oliver Lang: Children... I know that. This is war, Michael. In a war, children die.
Trivia: Not really a mistake - The microwave at Faraday's home is not plugged in. Since it shows up in a few shots, it's possible the filmmakers decided it would have created continuity errors if the clock was visible.