Continuity mistake: When we get to the comedy play fight between Maximus and Commodus, we look at the front of the stage and we see the actor playing Maximus is standing in the middle of the stage and the one playing Commodus on the right side. When we get a view from back of the stage 'Maximus' is standing on the left side of the stage and 'Commodus' in the middle. They have suddenly switched sides. (01:49:55)
Visible crew/equipment: In the scene on the DVD where Maximus' son is lunging his horse, just before he gets killed, the camera pans to show a view of the house in the background. On the right side of the house you can see two aerial power cables between the trees. You need a good resolution screen to pick it out: it's visible on my computer monitor but not on my television. (00:41:10)
Visible crew/equipment: After Maximus defeats Tigris of Gaul, there are Praetorians shown coming out of a gate on the left-hand side into the arena. In the next shot, you can see an open gate at the far end of the arena and you can see some kind of golf cart-like vehicle driving by on the outside of the Colosseum. It is very a motorized vehicle because there is no horse and it moves too smoothly. (01:43:55)
Continuity mistake: When Lucilla is making tonic for Commodus there is a close-up of her hand mixing the tonic. We can see on the table there is nothing near the glass except for a purple bottle which is probably 5 centimeters from the glass. When it cuts and she puts away the spoon she tips something over on the table right next to the glass. However it can't be the purple bottle because it would have to be closer to the glass in order for Lucilla to hit it. (01:12:55)
Revealing mistake: During the first gladiator battle there is a shot of Maximus stabbing another gladiator. When it cuts from behind that gladiator it is obvious that the sword is resting in his armpit before Maximus pulls it out. This happens a few shots after Hagen chops off his fellow gladiator's hand. (00:54:45)
Continuity mistake: In one scene, where you see a view of the Colosseum and its flags, all the flags are pointing towards the middle and that's strange keeping in mind the wind comes from one direction. (01:11:45)
Revealing mistake: During the first battle the Romans had with the Germans, they show a scene in slow motion with very emotive music that shows the massacre in the forest. Look closely at all the Romans and you will see one fall to the ground, then, as if it was a rewind, come back up again - and then fall again.