The Sting (1973) , Paul Newman and Robert Redford in Oscar winning form, it has an amazing ending.
The Anderson Tapes (1971), Sean Connery movie when he wasn't playing Bond, Sidney Lumet directed it, pretty slick film.
Wonder Boys (2000), Michael Douglas, Toney Maguire, Francis McDormand, Katie Holmes, Robert Downey Jr. Douglas's performance is good as Wall Street, Gem of a movie.
Medium Cool (1969), One of the great Cinematographers made this movie Haskell Wexler and was filmed before and during the infamous 1968 Democratic convention in Chicago, what makes it a fantastic film is Haskell films actual footage of the violence in the city at the time and he has the actors performing during it.
https://www.youtube.com/v/Q1jBezLoCXs