Continuity mistake: In the first two closeups of Steve's two dollar bill, the serial number on the bill is "A16452841A", but when Diana kisses the bill and leaves a lipstick mark, in the next closeup it's actually a different two dollar bill with serial number "A77148841A."
Continuity mistake: Near the end of the show, the squadron has to land on a carrier deck. The shots from the sky go back and forth between a straight deck carrier and an angled carrier deck. Also, an angled carrier wasn't put into use until the early 50's by the British, Black Sheep takes place in WWII.
Continuity mistake: After the chase in the potato truck, the Angels are missing the handcuffs around their wrists. But they can't have removed them: they didn't have a key, they only removed the cuffs from the connecting chains, and after they cut off the chains, they were in the truck until they pulled over.
Continuity mistake: When Whinfrey is at the railway station the weather changes from dry to wet.
Brain Wash - S3-E8
Continuity mistake: As hairdresser Bob is washing Jamie's hair in the sink, the shampoo coverage changes between shots. During the closeups, he never touches her forehead and ears but in the wide shots, her head is completely doused.