Factual error: During the opening montage when the news chopper is flying over San Diego, several buildings that were built after 1980 are visible.
Continuity mistake: When Ron throws the burrito at the biker, you can see from the shot in the car that it falls to the ground. After it falls, the biker swivels for a while, and then slides down the street, however, in the shot of him once he stopped, the burrito was in front of him.
Continuity mistake: After Ron throws the burrito at the biker the exterior shot of the car shows he is in the middle of the three lanes. When it cuts to his reaction shot you can see he is now in the left lane. After showing the biker in agony we see Ron getting out of his car in the middle lane.
Continuity mistake: In the huge street brawl scene, all of the news teams are in a circle, preparing to do battle. Tim Robbins can be seen tapping his pipe on his weapon, emptying out the tobacco. Later, after he chops off Luke Wilson's arm, he takes a long drag on his pipe.
Revealing mistake: During the scene where Ron is playing the jazz flute, as he blows the flame out of the flute, you can see a hose running from out of his sleeve and into the flute, most likely supplying gas for the flame. In both shots of the flame, the hose can be seen.
Continuity mistake: Before the big brawl between the rival news crews there are a number of shots where the sun is nearly setting and a second or so later will be right back up. The most notable one is just after Ben Stiller's Spanish language crew arrive there is an aerial shot with the sun very bright. In the next shot of Tim Robbins the shadow has become much more noticeable.
Continuity mistake: Right after Ron throws Veronica over the desk after she makes fun of his hair, she jumps on his back, and pins him to the floor. In the first shot of the floor, a purse is seen on Ron's right, but the in the next shot of the floor (where she picks up the mace) the purse is on his left.
Continuity mistake: At the bear scene, Frank Vitchard is using the wrong station's microphone. He works for Channel 2 (the third place station), but is using a microphone from KQHS-Channel 9, the second place station anchored by Vince Vaughn's character, Wes Mantooth.
Continuity mistake: When Veronica decides to sabotage Ron's sign off, she alters the end of his news script. The text just above the sign off is a story about a car. Yet during the broadcast, they are discussing a different story before the sign off.
Continuity mistake: In the scene when Ron invites Veronica to the "gun show", after he has counted over 1000, he goes to put his shirt on. He reaches into the armhole and then it switches to a shot of Veronica and then back to Ron. In the next shot of Ron, he is reaching into the armhole again.
Continuity mistake: In the aerial shot before the fight scene you can see a white truck parked at one of the loading docks. But when the actual fight happens there is no truck there anymore.
Continuity mistake: After the biker gets the burrito thrown at him and falls to the ground, there is a shot of him from behind where you can see that he undid his helmet buckle. But in the next shot of him getting up, he undoes the buckle again.
Factual error: In the scene where Ed Harkin calls the bar to ask if Ron Burgundy is there, you can see a calendar to the far right of the bartender. It is the calendar for July, and the 1st of July is a Tuesday. 1975 is the only year in the 1970's that this could be possible. "Afternoon Delight" (the song the news team sings when Veronica Corningstone is introduced) wasn't out until one year later, July of 1976.
Continuity mistake: In the scene on the bridge with the burrito, the opening shot shows two cars behind Ron, but in all of the shots afterwards the cars are gone.
Factual error: The movie takes place in the 1970s, yet the Channel 4 news van is an early 1980s model Dodge Ram Van.