This Male Chauvinist Piggy Went to Market - S3-E1
Revealing mistake: When Laurie goes to flip Goose over her shoulder, it's obvious that a stuntman is actually flipped; he has much shorter hair than the actor portraying Goose. (00:11:45)
The Partridge Family (1970)
1 revealing mistake in This Male Chauvinist Piggy Went to Market - chronological order
Starring: Shirley Jones, David Cassidy, Danny Bonaduce, Susan Dey
Visible crew/equipment: The wire used to guide Danny's arrow is visible. (00:16:25)
Shirley Renfrew Partridge: There's no sense in waiting up. Laurie's in good hands.
Danny: That's what I'm afraid of.
Keith: ...I wouldn't worry about him. He's an archaeologist. He can always dig up a girl.
A Tale of Two Hamsters - S2-E9
Trivia: Tiger Beat magazine held a "Partridge Family Smile Contest", with first prize being the role of an extra in this episode. The girl in the striped top was the winner of that contest. She is also listed in the closing credits. (00:21:50)