I Can Do Bad All By Myself and Avatar

Ancestor: Straw Dogs
Immediate Family: The Queen, Avatar, He-Man TV show staging
Family Gossip: I Can Do Bad and Final Destination (mentioned here) come from the same design house.

2012

Immediate Family: Graffiti/Revolutionary bills
Distant Relative: 2010
Family Gossip: In the final key art, I think the 2012 font would have been more intriguing in an ancient mayan font. The thin and sleek modern font isn't very ominous.

Saw VI

Family Gossip: The visual read of the Roman "I" could be stronger in this layout. Perhaps if it were not connected to the V shape it would look more intentional.

Youth In Revolt

Distant Relatives: Meatballs, Postcards from the Edge, Stripes
Family Gossip: The use of Cooper black in the key art feels like a throwaway. The Beach Boys' use of it is more committed.

Whiteout

Immediate Family: Fragrance Ads
Distant Relative: Premonition
Family Gossip: Below are some shots of the poster around Los Angeles.

World's Greatest Dad

Immediate Family: Disaster Movie, Epic Movie, most Eddie Murphy movies
Distant Relative: The Great Ziegfeld (very distant!)

Final Destination

Immediate Family: Prom Night
Distant Relative: Straw Dogs
Family Gossip:
The Straw Dogs connection may be thin. But for me, that image is so clever and powerful that any movie poster with broken glass in it owes a debt to the Straw Dogs poster.