I wonder what the protocol is for a movie taking the title of one that already exists.

For example, there's My Blue Heaven from the early 50s I think and the one from the 90s with Steve Martin. It's not a remake. Then I noticed that there's a Woody Harrellson movie from 2008 entitled The Messenger, but there's also one from 1999 with Milla Jovonovich and there completely different plots. I've noticed several others over the years. Does anybody know?


"Generosity. That was my first mistake."
"Experience must be our only guide; reason may mislead us."
"Instagram is Twitter for people who can't read."