My wife and I have a paid membership to
screenit.com
The site breaks down every movie they review down to specific instances and count of everything that could be considered even remotely objectionable.
You will know exactly how many “four letter words” there are in the movie and which ones.
They describe every scene with anything from short skirts to cleavage to outright nudity.
They list out alcohol and tobacco use, immitatable behavior, and violent acts.
All this while being remarkably spoiler free.
With all this information, you can apply your own standards.
My wife and I are generally ok with anything pg-13 or lower.
On R movies, we’re willing to let some profanity slide, but if it gets too much, we’ll just wait for it to be on tv, or not watch at all if it’s that bad. We’re ok with violence since it’s mostly fake, unless it gets too gory. (Wish we had looked up “The Happening” before we wasted our money on that one)
Nudity is a tough sell though. Hard to justify people being exposed for the entertainment of others. Even when tasteful, you can’t really control how others will consume the media once produced. I know it’s arguable, for us the potential misuse outweighs the potential benefits, but that’s just our own standard.
We don’t worry to much about objectionable themes since anything morally objectionable, probably won’t get us interested to go watch.