They nailed the interaction between the two

The acting was superb in the initial interaction (you know that awkward honeymoon stage where nobody wants to step on the others toes) then the slow build up to the writer getting DFW to open up, then the display of bad social skills that lead to the fight, wow ... was just amazed at how well the acting was in that relationship. It's really hard to act "awkward" and they absolutely nailed it. I was as nervous as the writer was as he was trying to break the ice.

One of the best movies I've seen in a while. imdb 9/10