Factual error: Ben Stiller buys Champagne in a drug store, yet in NY the only legal place to buy wine/champagne is a liquor store.
Factual error: The hospital scenes were shot at Newham University Hospital, which was (and still is) a modern, well-equipped hospital. Everything in the scenes is blatantly anachronistic: a scene set in 1968 is full of furniture, fittings, and advanced medical equipment that is from the very late Nineties when this scene was shot.
Factual error: In the scene where Violet gets her tapes back outside her apartment, she looks at an envelope with HER name as the sending address and the company as the return address. This is possible, however, the envelope would not be stamped "unsolicited mail" if it was re-packaged by the company. An unsolicited stamp would be there, like all the other envelopes, if it was being returned to her in the original envelope, with her name as the RETURN address, instead of the sending address. (01:19:25)
Factual error: The average speed of an African Ostrich is 31mph, not 27mph as noted in the film.
Factual error: After the onside kick, they did NOT return for a big gain. Bateman tried to keep running with the ball, but Falco (who as quarterback shouldn't even be on the field during this play) tackled him. While Bateman was running with the ball, he just kept going back and forth near the line of scrimmage and didn't advance.
Factual error: When Novalee is locked inside Wal-mart during a storm she looks out the front. Water is streaming down the front doors. The problem with this is that the doors of the Wal-mart are very far under an awning and would never see that sort of rain. The awning is shown a minute or so before and is a standard Wal-mart feature. (00:16:45)
Factual error: The Lancer that gets lost on the train tracks can't come back into Paris the way it did by taking the metro, as the Paris metro is not connected to the railways. Also, if the movie depicts it going out at Trocadéro, the station is on lines 6 and 9. However, the sign to enter the metro shows the station connects with lines 2, 5 and 8 - no such station exists in Paris.
Factual error: Prior to the Yom Kippur sermon where Rabbi Stiller is asking for forgiveness for not revealing his relationship, the cantor sing the Kol Nidrei prayer, which is only sung once a year on Yom Kippur eve. Totally obvious mistake to anyone who knows anything about Judaism. Clearly Stiller and the script writers do not.
Factual error: Throughout the film, you hear Lina Termini's "Ma L'Amore No" playing on the gramophones. However, "Ma L'Amore No" was released in 1943 - three years after the film's setting. (02:02:00)
Factual error: When Wolf is starting to turn and the Queen contacts him, after he storms off, in the daylight in the distant background on top of the hill electricity towers can be seen.