I finished Assassin's Creed: Brotherhood last night, and man, when people say it has a crazy ending, they are not kidding around.  I'm not going to go into spoilers here, but suffice it to say this series just gets crazier with each new game.  The first Assassin's Creed threw in the twist at the end with the Pieces of Eden and what they can do.  Assassin's Creed II upped the ante significantly with the revelation of Minerva and what all of Ezio's work ended up being for.  Somehow Brotherhood still manages to surpass that craziness with an ending that left me completely waiting for AC3 to come out.  I cannot wait!  Speaking of AC3, the one weird  thing I find about Brotherhood is its name.  Sure it's the continuing adventures of Ezio inside the Animus, but some serious stuff happens for Desmond too, at least as significant in advancing the Desmond story as the past two games were.  If they go and name the next game Assassin's Creed III, I think that might cause some issues.  Naming Brotherhood such makes it seem like it's just an unimportant spin-off that could be skipped.  If you went straight from AC2 to AC3, you would be missing huge story elements that you really need.  I don't know what they should do, but I think they need to come up with a more elegant naming scheme for the series from here out, or many people may overlook this crucial piece of the Assassin's Creed story.