Revealing mistake: When they're dancing on the bowling alleys, they couldn't be waving their bowling balls about as if they were made from foam - bowling balls are heavy!
Suggested correction: Bowling balls can weigh as little as 3 pounds.
Revealing mistake: When the little girl runs towards her grandmother and knocks another old woman out of the way, the other woman crashes into the wall of the terminal and it wobbles, showing it's a thin set wall. (00:14:35)
Revealing mistake: During the autopsy scene, it's obvious that the Panther is still breathing when it's supposed to be dead.
Revealing mistake: Throughout the film and specifically near the end after Jim has reclaimed Bess and the colt, there are visible horseshoes on the supposedly "wild" horses. While there would logically be a number of abandoned and escaped horses among the herd at any one time, those who joined them in a shod condition would not remain so very long in rugged country. Those born into the wild would never have worn shoes. Reason dictates there would be very few if any horses remaining shod at any one time.
Revealing mistake: When Rick is having sex with Carmela, it's obvious that it's completely fake. The filmmakers tried to hide it by filming through the keyhole and only showing half their bodies but at one point you can see that Rick is lower than Carmela. Also Carmela is voiced over because her voice doesn't match her mouth. (00:43:10)
Revealing mistake: When Foley is in his karate suit in the blip hanger he is choking Daniels, but his hands are very loose around his neck.
Revealing mistake: Victor(ia) is supposed to be a male performer. Yet in the musical number closeups, the outline of her female cleavage is too obvious, in spite that she would be wearing bosom padding for her costume, and Patrons seated in the front row and the balcony would notice the difference.