Just wanted to add what a great actor John Cazale was. A real shame we lost him at such a young age.

The Godfather (One and Two) , The Conversation, Dog Day Afternoon and the Deer Hunter. Not one bad movie.

HBO had a really good documentary on Cazale called : "I Knew It Was You: Rediscovering John Cazale"

If you've never seen it i highly recommend checking it out.