The Sunset Limited (2011)

A God-fearing ex-con (Samuel L. Jackson) saves a despondent college professor (Tommy Lee Jones) from throwing himself in front of a speeding subway train, and struggles to comprehend the suicidal man's unwavering despair during a series of intense philosophical debates. Adapted from the play by Cormac McCarthy (All the Pretty Horses, The Road). ~ Jason Buchanan, Rovi