Audio problem: In the cornfield, after Rick has run Lance over in his truck, Rick gets out and walks towards Lance saying, "Get on your feet, you....!" Although the shot is shown upside-down it is quite plain that his lips are not moving. (00:33:50)
Audio problem: Just before the girl chucks the lolly at Felicity, she says something along the line of "I would have..." but her mouth doesn't match what she is saying. (01:17:50)
Answer: LoJack.