In Part III when Vader is being "assembled" after removing from the tank you see one of his robotic arms being attached. Shortly afterwards there is a shot from behind and both of his forearms are still missing.
Ben asks Leia how old she is, but in his earlier conversation with Bail he mentioned it's been ten years since he was exiled after Leia and Luke's birth.
However, this isn't a goof, he clearly knows her age, the remark is made in a joking way to imply that she is not behaving as a typical child of her age might.
However, this isn't a goof, he clearly knows her age, the remark is made in a joking way to imply that she is not behaving as a typical child of her age might.
When the Third Sister first ignites her lightsaber it does not cast any light on her or the surroundings. In all subsequent shots it casts a bright red glow.
When Obi-Wan is captured and his Light Sabre is taken from him, the top of the weapon is bent out of place but in the next shot it has been repaired.