Klink for the Defense - S6-E19
Continuity mistake: General Burkhalter is eating Klink's dinner. When finished he places a metal cover over the plate. In the next shot the cover is lying on the table and there is extra food on the plate. (00:15:25)
Invisible House For Sale - S4-E16
Continuity mistake: Throughout this episode, the coat rack behind Major Nelson's front door alternates between having a coat of arms decoration in the middle or nothing in the middle. It seems this episode was filmed while a set change was taking place, since previous episodes feature a hand holding a bell as the center decoration for the coat rack and following episodes feature the coat of arms decoration.
Continuity mistake: In the opening, when Oliver goes to grab Lisa's hand, he moves his left hand. When the camera looks at Lisa, Oliver is reaching with his right hand.
Visit to a Hostile Planet - S3-E2
Continuity mistake: When the guy shoots the Robinson Robot it leaves a big bullet hole on the front. In the next shot we see the Robinson Robot turning around and the bullet hole is gone.
Continuity mistake: When Max is phoning the Chief to let him know the mission's been accomplished, he takes the oars out of the oarlocks before opening his shoephone. The oars change from being out of the oarlocks in the closeups to still being in the water in the long shots for the rest of the episode. (00:23:50 - 00:24:30)
Carmelita Is One of Us - S3-E25
Continuity mistake: In full shots of Kelly holding the baby, it is entirely covered by the pink blanket. But in close-ups, the blanket is pulled back to completely expose the baby's head. (00:17:00)
A Horse of Another Color - S2-E21
Continuity mistake: After the Captain and Corporal get out of the cave, they see the Sarge and Jane have ropes on Black Devil. He gets away with their ropes around his neck. He peeks around the rock, and the ropes are suddenly gone. The mare comes after with a rope on her neck that also disappears magically between angles.
Continuity mistake: Hayata blindly reaches for the Beta capsule that allows him to become Ultraman. He accidentally knocks it off the building. It happens twice in two separate shots and it happens differently, with either end falling first. (00:20:15)