This Poynter page has an interesting list of newspapers' headlines on a same-sex marriage story.
How different are they?
Judge Says Gay Marriages Break the Law [Chicago Sun-Times]
Judge lets gays marry [Melbourne Herald Sun]
Judge Urges Halt to Same-Sex Marriage [Miami Herald]
This can be a good exercise. Poynter has a space for people to leave their comments on which headline is most accurate. But either no one has left any, or it's difficult to find them.