At one point, the News Director announces that the ratings went up the previous night. Nielsen did not introduce overnight measurement in the San Diego market until the 1990s. In the 1970s (when the film takes place), the only source of ratings data were the 4 sweeps months, for which the data took several weeks to be made available.
In several shots of downtown San Diego's Petco Park, home of the San Diego Padres can be seen. Petco Park opened in April 2004. During the 1970's the Padres shared then called San Diego Stadium with the San Diego Chargers.
Several of the typefaces used were not designed at the time the movie was set. At 5m in, the vector version of the font Geneva (introduced in 1991) is used for the word "Exclusive!". At 70m in, the vector version of the font Chicago (also from 1991) is used at the end of the teleprompter reel.
When Ron Burgundy calls his news team to him with the giant seashell, his echoing call is heard over an aerial view of a cityscape; on the side of one of the buildings is NBC's current "peacock" logo. During the late 70s, NBC was using a stylized "N" as its logo.
The movie is set in the mid 1970s, but when Ron Burgundy is crying about his dog, Bryan has a 2x2 Rubik's Cube on his desk. The famous 3x3 Rubik's Cube wasn't introduced in the U.S. until the 1979 Christmas season, and variations weren't introduced until the 1980s.
In Brick's first scene, a man behind him is seen drinking a beverage out of an aluminum can with an indentation around the top rim of the can where one's bottom lip would go. This style of can was not introduced until the 1980s. Cans in the 1970s had straight cylindrical walls.
During the opening scene, the view from the helicopter shows an Arleigh Burke class guided missile destroyer. these ships were not even planned in the time period of the film and the first one wasn't commissioned until 1991.
After Ron and his gang have the big gang war with the other four news teams, he and his three co-workers are sitting in his office drinking some beers, and the amount of beer in the bottles change many times.
In the, "Afternoon Delight" scene, Ron announces that he is in love with Veronica. As Brian closes the door to Ron's office, his lit cigarette is a third of the way burnt down. When he turns around to face Ron after closing the door, his cigarette looks as though it has just been lit.
When Ron is coming to pick up Veronica for their first date and Veronica is waiting for him in the Channel 4 News Lobby, she buttons her jacket in one shot. In the next shot, her jacket is unbuttoned again.
During the big party at the start of the movie, a woman in the background changes clothes numerous times between shots. She is first seen in lingerie during Brick Tamland's kitchen intro, then a short dress, and then back to the lingerie outfit.
In the opening party scene where Ron sees Veronica for the first time, Ron has nothing but a small glass, and he finishes whatever drink he has in it. When Ron follows Veronica he never stops for anything but the first time he talks to her he has a full, large class with an orange slice on the rim and an umbrella in it.
When the fight between news teams is about to take place, the second news team arrive on bikes. When they are talking to Ron and his news team they have their bikes between their legs, which they push away so they fall to the ground. In the next shot the bikes are no longer there.
During the party when Ron is looking for the woman who ends up being Veronica Corningstone, his glass is almost empty in one shot, and then in the next his glass is full with an umbrella and a skewer with fruit on it.
When Ron is talking to Brian on the phone after the burrito scene, the phone in the booth is a touch tone. Touch-tone dialing was widely introduced to the public in 1964. Touch-tone phones, although not common, were found in some phone booths in the 1970s.
When Ron reads the teleprompter with the question mark on it, it is revealed that the words on the prompter don't match the words that Ron said. The plot depends on the notion that Ron cannot help but read anything that is put on the teleprompter.
Directly following the "Panda Watch day #5" report, as Ron Burgundy is reading his sign-off from the teleprompter, the words do not match, defeating the plot point that he can't diverge from the teleprompter.
When Ron throws the burrito out his car window, we see the fallen motorcyclist eventually slide to a stop. The burrito is shown smashed on the pavement; stationary and beyond where the motorcyclist stopped sliding, revealing that the burrito had been placed on the ground before the scene was filmed.
The goof items below may give away important plot points.
After the scene Brian and Ron are talking about Baxter being punted off the bridge, we see Ron running down the street to get back to the news station. As he runs into a man, we hear him say "I've got to do the news!" but his mouth clearly is not moving.
After Ron is fired, he walks down the street and is confronted by a few people. A little girl tells him off, and then continues to walk with her mom. That is, until she gets about 20 feet away, and turns around to run back to Ron.
When Frank Vitchard is reporting the birth of the panda at the end of the movie, his microphone has the call letters of Wes Mantooth's station (Channel 9), not Channel 2 news he said he was in at the street fight.