Revealing mistake: When Rodney is holding Damien, it shows a shot of it in the mirror, the next shot is from behind the mirror and he is holding him the different way round.
Suggested correction: This was during his dream, so probably plausible in those circumstances.
Audio problem: In one of the scenes where you see Del trying to sell some ski wear at the market, his lips are obviously saying something totally different to what he actually says. They have dubbed over the original soundtrack.
Continuity mistake: When Rodney comes into the dentist to see Del about the gerbil, he looks a bit windswept with his hair everywhere, but when it cuts back to Rodney, his hair is perfect.
Continuity mistake: When Rodney and Del are coming out of the casino in the morning as they're coming down the stairs they don't have their coats on, in the next scene they do.
