Rule #1
I loved this movie and even bought the DVD but there was one thing that bothered me through the whole movie... RULE #1!
To me, it is unrealistic to make the clones agree to rule #1. The clones are as much as Doug 1 as Doug 1 is. They have the same memories and feelings (pretty much), how could they agree not to have sex with "their" wife?
At first the clones didn't even know they were the clones so they are as married to Laura as much as Doug 1 is. I wouldn't want me telling me I couldn't have sex with my wife, especially if she is Andie McDowell!