Godfather Trilogy - Intelligent conversations this film and seemingly realistic.
Shawshank Redemption - I couldn't believe all the things this guy goes through. I'm sure there would have been a public outcry (spoilers ahead) if in the end, he didn't make it out. The guy's escape in the end so over the top, yet believeable. Gripping film.
Scarface - Al Pachino is so cool in this film. This is usually referred to as a cult classic and not brilliant film making by critics, but I found it to be absolutely engrossing until the very end, especially with all the tragedies that happen which would put Romeo and Julliets' to shame.