I recently got a HDD full of old movies from a friend. So far, I have watched a little over 20 that I haven't seen before. Some I gave up after 20 -30 mins, some I fast-forwarded.
From the ones that I have completed so far, I think the following are really good. 
Still got over 200 movies to watch.
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Plot:
"Lester Burnham (Kevin Spacey) is a gainfully employed suburban husband and father. Fed up with his boring, stagnant existence, he quits his job and decides to reinvent himself as a pot-smoking, responsibility-shirking teenager. What follows is at once cynical, hysterical, and, eventually, tragically uplifting."
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Plot:
"Widowed when his FBI agent wife is killed by an extremist group, college professor Michael Faraday (Jeff Bridges) becomes obsessed with the culture of these groups -- especially when his new all-American neighbors, Oliver (Tim Robbins) and Cheryl Lang (Joan Cusack), start acting suspiciously. With each twist, the mystery deepens and questions loom as to whether Faraday is consumed by fear and driven by paranoia, or whether a lethal conspiracy has been born on Arlington Road."
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Plot:
"During the 1991 Gulf War, Lieutenant Colonel Nathaniel Serling (Denzel Washington) accidentally caused a friendly fire incident, a mistake that was hushed up by his superiors. Following the war, he is assigned to investigate the case of Army Captain Karen Walden (Meg Ryan), killed in action when her Medevac unit was attempting to rescue the crew of a downed helicopter. But, as Serling interviews the members of Walden's crew, he realizes their stories about the incident don't add up."
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Plot:
"After the Cold War, a breakaway Russian republic with nuclear warheads becomes a possible worldwide threat. U.S. submarine Capt. Frank Ramsey (Gene Hackman) signs on a relatively green but highly recommended Lt. Cmdr. Ron Hunter (Denzel Washington) to the USS Alabama, which may be the only ship able to stop a possible Armageddon. When Ramsay insists that the Alabama must act aggressively, Hunter, fearing they will start rather than stop a disaster, leads a potential mutiny to stop him."
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Plot:
"After witnessing the execution of serial killer Edgar Reese (Elias Koteas), whom he arrested, police detective John Hobbes (Denzel Washington), and his partner, Jonesy (John Goodman), are soon investigating another murderer whose mode of operation is eerily similar to Reese's. In the course of the investigation, Hobbes meets theology professor Gretta Milano (Embeth Davidtz), who introduces him to the world of the occult and the possibility that an evil spirit is behind the killings."
Trailer:
https://www.youtube.com/watch?v=ju75Sd4yAZw
Plot:
""Fargo" is a reality-based crime drama set in Minnesota in 1987. Jerry Lundegaard (William H. Macy) is a car salesman in Minneapolis who has gotten himself into debt and is so desperate for money that he hires two thugs (Steve Buscemi), (Peter Stormare) to kidnap his own wife. Jerry will collect the ransom from her wealthy father (Harve Presnell), paying the thugs a small portion and keeping the rest to satisfy his debts. The scheme collapses when the thugs shoot a state trooper."