Motherhood - S5-E22
Continuity mistake: When Athena falls on the ground after mortally wounded, she was not holding her wound. When her body was shown again, she is.
Continuity mistake: During the battle in Callisto's cave hideout, Callisto leaves her sword behind when she runs to her chariot. When Callisto sinks in the quicksand, her sword and dagger are not seen. When Xena encounters Callisto in the underworld in "Intimate Stranger", Callisto's sword and dagger have reappeared.
Continuity mistake: When the episode starts Xena and Gabrielle are talking in voiceovers. When they are shown from a distance, you can see Gabrielle wearing the outfit (long brown skirt and light blue shirt) that she wears at the beginning of season 1 (right after leaving with Xena and before being with the Amazons). She also isn't carrying her stick. The next scene in the temple she's wearing the green top and short brown skirt and also has her stick with her.
Continuity mistake: When Xena starts chasing down Callisto after the attempt on the Oracle's life she has her sword in the sheath on her back, as can be plainly seen when she jumps on Argo. A couple of seconds later, there are a few shots of her charging after Callisto without her sword, which comes back in the sheath once the chase gets in open field. (00:23:00)
Is There A Doctor in the House? - S1-E24
Revealing mistake: After Gabrielle's been wounded, there's a scene where she starts thrashing violently. A little after that, Hippocrates declares her dead despite the fact that you can see her breathing in the previous shot.
Factual error: Calliope is called the Muse of dance. The Muse of dance was Terpsichore. Calliope was the Muse of poetry.
Continuity mistake: When Callisto and Xena first battle on horseback, Xena knocks Callisto's sword to the ground and Callisto escapes. When Callisto is training with Theodorus and the army at their hideout, her sword has reappeared, although she didn't pick it back up at the village.
Other mistake: When Callisto (in Xena's body) enters the cave hideout of Theodorus and his men, Theodorus assumes she's the real Xena. However, she walks in a Callisto-like way, indicating she isn't. Callisto's army never appears again either, not even after she becomes an immortal and a goddess. On her own in future episodes, Callisto still wears the same warlord outfit she wore when she led Theodorus and the army on village rampages.