Revealing mistake: The newspaper says that the Pink Panther was stolen on 24th January. The scenes of Gstaad, in the Swiss alps, were obviously not filmed in January. The temperature in Gstaad gets up to about 5°C/41°F in January yet people are shown wearing light clothing with bare arms. (00:53:05)
Revealing mistake: Anytime there is a fight, the hits hardly come close to making contact, but the sound effect is still there.
Revealing mistake: The caboose and two bunk cars are uncoupled and sent rolling down the hill, with troops locked inside. As the cars roll off a cliff, troops can be heard yelling. However, as the cars hit the ground and shatter into rubble, the wood does not appear to be blood stained, nor does there appear to be any sign of bodies in the debris. The cars were obviously empty for the scene, and given the circumstances of the soldiers allegedly trapped within them, it's unlikely that any of the soldiers could've gotten out in time.
Revealing mistake: When the black guy is attacked after being let go, his throat is slashed. Check out how dreadfully fake the blood is. It looks like watered down ketchup.
Revealing mistake: Establishing shots of the party where Chaney will fight Pettibon's guy; when we see the band play and people dance, the footage is rather obviously stopped and reversed to give the impression of a longer shot (evidently they had too little usable film of the crowd dancing). (00:31:00)