Parent Previews is a website that allows parents to find out just how their favorite movies rated in terms of  violence, sex, drugs/alcohol. Each movie listed is given a report card iwhich includes an overall grade and then content area rated separately. I think this is a great concept and also allows parents to decide in advance what movies to take their children to - even with a PG rating some movies can score pretty low in some of the content areas. You can fsearch for new releases as well as from thousands of past releases.