KoFXII is my new addiction. I'm getting MvC2... but it and BB will have to fight for the second hand spot behind XII, especially if XII's patch makes it's online BB quality + Team battle Mode.
As a fan of Pixel Art, traditional 2D game techniques, and one being of the belief that "Fighters lost popularity, because they became too convoluted for their own good", XII does exactly what I'd want it to do. It's gameplay is fantastic, if you give it the time to learn the ins and outs. Impact, weight, specific timing, and varying levels of patience and finesse, leading to solid, quick fights, that still feel strategic... it's so full of Win. It's like Garou, but with more friendly, robust combo options.