Revealing mistake: When Kaleipus is dying, his eyepatch is not on his eye properly, and you can see his real eye under the eyepatch several times, although the character is supposed to only have one eye. (00:18:40)
Revealing mistake: When Xena drags Gabrielle with the whip behind her horse, you can see in some shots it is a dummy - as the arms are in a static position. In other shots, Gabrielle is a man, as shown by how much larger she suddenly gets. (00:02:00)
Revealing mistake: When Hope and Gabrielle are talking, and Gabby says she's sorry the poison didn't kill Hope, look when the camera is on Hope and behind Gabby. Since Renee O'Conner plays both parts, a double is used from the back. The double is really bad. Her build is way too small and un-muscular to be Gabby.