Snowpiercer
In the final act of Snowpiercer, both audiences and Curtis (Chris Evans), a lower-class passenger, learn that Wilford (Ed Harris) staged the rebellion all along in order to reduce the train's population for the sake of manageability. Later, the two young survivors of the deadly train crash encounter a polar bear, symbolizing the permanence of nature.
Seven Pounds
A haunting secret torments Ben Thomas (Will Smith) in Seven Pounds—he caused a horrific car crash that took the lives of seven individuals, including his wife. Thomas believes he can only be redeemed for his actions by saving the lives of seven strangers. Critics were far from thrilled with the ending, in which Thomas commits suicide by allowing his jellyfish to sting himself to death in a bathtub so that his organs may be donated to the seven people he was determined to help, all of whom were in need of organ transplants.