So I watched the documentary today, and it was very impressive. It was extremely impartial, which makes it quite different than some of the more politically charged accounts, and Tom Hanks did a very good job narrating the whole thing. It was also very accurate to period, which led to the usual issues one might have with a period drama - mainly, the usage of what is now a racial slur. However that is obviously something that any accurate reproduction would take. If you want a good look at what happened before, during, and after the assassination, I'd highly recommend Killing Lincoln.