Helpmates (1932)

Continuity mistake: When Oliver pulls down the chimney pipe from the stove, he is hit by a cloud of soot. At this point, you can see that the top of Oliver's hat is clean, but when Stan appears in the next shot, his hat is now covered in soot.

Revealing mistake: Ollie throws a flower pot at Stan. Stan ducks and the pot continues through the house, breaking a window and hitting a gardener outside. On the DVD of the film, the long wire the flower pot is attached to is visible.

Continuity mistake: A gas stove explodes, sending Ollie flying from the kitchen into the dining room, where he falls on a table, breaking it. Ollie's hat is in perfect condition when he lands on the floor. When he gets up, the top of his hat is torn, covered in soot and sticking straight up.

Ollie: Get this house cleaned up! Do you know that my wife will be home at noon.
Stan: Say, what do you think I am? Cinderella? If I had any sense I'd walk out on you.
Ollie: Well it's a good thing you haven't any sense.
Stan: It certainly is.