Nillac - Couldn't have said it better!! I agree with you, there is the internet and newspaper to read about all the movies that are showing. Sometimes I do question the ratings they give movies though... 17 again being PG.... maybe M would have been better.
That being said, I probably would not have thought twice if the movie was given a PG rating, but I would be a little annoyed if I took children to see it and then found out it was more for adults.