'Guest Artist' starring Jeff Daniels as an alcoholic pulitzer prize winner screenplay writer who isn't working up to par since the prize.
Most of the movie takes place at a train station, and looks like a play, as Jeff Daniels argues with, and advises the young driver, who is supposed to take him to some event, about writing and self awareness, etc.
I liked it a lot. It's a recent movie, but no one has ever heard of it, apparently.