Question: My wife was telling me about a movie or tv shows she saw a long time ago...but can't remember what it was.

A group of people have numbers on their foreheads, which is atypical. They don't know what the numbers are for, but eventually realize that they are the number of days they have left to live. When the countdown reaches 0, something will come for them.

I know this isn't a lot to go on, but it sounded so intriging that I'm very curious. Any ideas?

Answer: 
Maybe not exactly on foreheads... "The brand New Testament"

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> God lives in an apartment in Brussels which he shares with his meek wife and his 10-year-old daughter Ea, to whom he is emotionally and physically abusive. God is a grumpy sadist who created humankind specifically to have something to torment. He manipulates reality via a personal computer which he forbids his family from accessing. One day, Ea sneaks into his office and discovers how He has been mistreating humans. This enrages God who then whips Ea with his belt. Ea decides to rebel against her father. She steals the key to His office and accesses the scheduled dates of death of every human in the world and releases the information to them via their portable telephones
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I think the movie you are looking for is called, In Time. Time is currency. It stars Justin Timberlake.