I'm going to have to say Sengoku Basara is the best I've seen so far.
I mean if just for this scene right here:
Also I doubt it will get released in the US as it's not 3 years old or so, but there is a fighting game that we played for a few months based on the games called Sengoku Basara X(Cross). That's why I watched the anime, and damn was that game fun until we realized how easy the infinites were.