Here are some more great films w/ descriptions:

Needful Things
(An old mysterious man moves into town to start up a local thrift shop. To the surprise of the locals, he has something everyone deeply covets. Only this old man does not take money as typical merchants, for those needful things they must do nefarious deeds. The price for these possessions turns out to be far heavier than expected, 1993)

Dog Day Afternoon
(Three young adults decide to rob a bank but things did not work as planned, so they take hostages inside the bank in a gamble to work out a deal with the feds, 1975)

Wake In Fright
(A man gets stranded in an old rural town full of binge drinking drunks, and he must work hard labor to pay his way out of the mess they all get him into, 1971)

Walking Tall
(Based on a true story in Tennessee, one brave man stands up to a corrupted Sheriff and runs against him. Angering the incumbent Sheriff, corrupted deputies and local criminals plan vengeance against the man and his family after he wins the county election, 1973).

Gran Torino
(A disgruntled veteran living in a once-safe neighborhood is the only white guy on the block who refuses to leave the hood full of gangbangers and crime. After a teen tries to steal his 1972 Gran Torino, he decides to reform the kid instead of killing or turning him in, 2008)