I honestly think this is one of the best films in American cinema for a few years. Incredible piece of work.
Meanwhile I have to say I draw the line at thinking he should have been in the running for Best Actor. If you watch the superb making of documentary you'll see how many takes (90+ for one scene!) Fincher used and then he 'built' the performances from multiple takes. I'm not questioning the method at all, but from the actor's perspective, I do question how much control they actually had over the characters.
This is the same criticism that I have leveled against, for many years, Marlon Brando's performance in On the Waterfront. While the dialog and the intensity are both there, if you measure the time between cuts, it never goes for more than 15 seconds between edits. Brando was well known by then, for asking for multiple takes to get into the character precisely. As good as he appears, you wonder how much of his performance was created by the film editor. Especially when you consider that the film editor is often the unsung genius on most films.
But he was active. The last post here is only a month old or so.