Margin Call is a really REALLY good. I don't know I was expecting when I saw this, but I can honestly say that even after seeing it a few days ago, I am still thinking about it. The acting was superb, there was not a bad performance in the bunch and Kevin Spacey as the finance big wig plagued by a moral dilemma and Zachary Quinto as the young and shy genius whiz-kid, were both highlights for me. The film's director, J. C. Chandor, does a fantastic job of building tension and suspense. This film is a must see for anyone who enjoys smart and thoughtful movies.