Audio problem: In the scene where Fook Mi is explaining about her sister and her names, she points to her sister and says "Fook Yu." Then she points to herself and says "Fook Mi. See?" When she says this, you can see that her mouth doesn't move.
Audio problem: In the scene where Fat Bastard is taking a dump you see his shadow through that wall thing. However his mouth isn't moving in time with the words you hear him say.
Audio problem: In the scene where Austin gets interrupted by Basil when he's with the Japanese twins, you can hear the twins say "bye bye", but they don't move their mouths. (00:16:41)
Answer: The footage of Michael Caine is from the 1967 film Hurry Sundown.
David Mercier