Revealing mistake: Xena rides by on her horse, Argo. It is her stunt double, and not Lucy Lawless. (00:10:20)
Revealing mistake: When Xena throws the chahkram at the tree limb, the limb is visibly cut before the digital chahkram slices through it. (00:13:00)
Revealing mistake: In the beginning battle scene, the long shots of Amarice are a stunt double, her face is shown quite a bit. (00:04:35)
Revealing mistake: When Brutus is capturing Gabrielle, the metal plates on his helmet move, and appear very flimsy. They hardly look strong enough to protect him as a helmet should. (00:13:45)
Revealing mistake: When Callisto holds the chakram with one finger, you can see the stick she's holding that makes it look balanced on her finger. (00:16:20)
Revealing mistake: As Xena watches the dead being put into the wagon, one body is rolled over. You see the man move his arm quickly to shield his fall. (00:25:25)
Married with Fishsticks - S5-E15
Revealing mistake: In the scene where "Crustacea" is being hung upside down in the water by the children, you can see her wig detaching on the sides by her ears.
The Haunting of Amphipolis - S6-E2
Revealing mistake: When Xena comes in and checks on Gabrielle, a possessed Gabrielle is hanging from the ceiling naked. In the long shot you can see her nude suit and the wires holding her up.
Revealing mistake: There is an Amazon ritual being performed where the character has to be cut on the arm, but you can see the blood on the knife before the blade touches her arm.