3. Bonnie and Clyde
If Easy Rider captured the culture than Bonnie and Clyde defined it. The film is incredibly important by allowing new levels of on screen violence and depravity into the cinemas of the 60s and 70s. While it may be considered fairly tame by today's standards it still retains the power to shock viewers with its honest depiction of violence and lawlessness. The ending of the film is the best part about the entire movie. Seeing Bonnie and Clyde killed by copious amounts of gunfire gives the viewer a deflated sense of excitement that had never been seen in movies before. After spending the entire story with the two protagonists its expected that they're going to ride off into the sunset free to pursue their outlaw lifestyles then, seemingly out of nowhere, they're gunned down and the movie's over making for one of the most abrupt and shocking moments in film history.