This game is made of mother****ing win. Just finished the demo, and even on older ATi hardware it's hauling fast. Absomother****ingloutely amazing. I didn't like the feeling of quicktime events, but playing through again just to get new buttwhoopin moves gives me much hope.
The entire voice cast of TAS is there, and the action is much like the Dark Knight-MUCH brutality to be had.
Crowning moment of the demo? "Oh My God, he's above us, we can't see him!" as I swoop down silently, clip the grapnel line to him and suspend him from a gargoyle. Pure Batman.