Dustin Hoffman was a major dramatic force from the 60s-80: starring in 'Rain Man', 'Marathon Man', and 'Kramer vs. Kramer'. Oh, not to mention he vicariously satisfied many the teenage fantasy in 1967 classic 'The Graduate'.
Given a movie is really just a play with some cameras chucked in, it is unsurprising so many fantastic films have emerged from the thespian sphere; enjoy this collection of play adaptations, ranging from the work of Old Bill to Arthur Miller.
Remember all those books they made you read in 9th grade English? Guess what, they made movies out of them! Check out 'The Old Man and the Sea', 'Beloved', and - most recently - 'In the Heart of the Sea' (based on 'Moby Dick')!