Taken from Gamespot.com:
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Unreal technology and benchmark
A few character models standing around an indoor level served to demonstrate the engine's "ragdoll" physics. When a character dies, the ragdoll physics takes over for the standard skeletal animation system, letting the character model's limbs move around joints that are constrained to normal ranges of movement. A sniper shot to a character model at the top of a tower gave the model enough of a push to knock it over, tumbling down and colliding into objects on the way. This is all handled in real-time, so each death fall was dramatically different. Even better, the ragdoll system works even between multiple character models, as we saw when two models fell down stairs together, rolling one over the other, limbs all mixed up. The Karma physics engine is a third-party product by the UK-based Math Engine, and while it's been made to work seamlessly with the Unreal engine, it also works with Criterion's RenderWare engine. Interesting enough, Karma's KAT tool can actually import the skeletal data produced by a game's 3D artists for regular animation purposes and automatically simplify that into a system of joints.
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CANT WAIT
