Arms arms arms. So many arms. German company Festo has their muscle emulating arm, called Airic's_Arm. Click through for some fluidic muscle awesomeness. Note that there are a significant number of components in the torso piece, making this a little way off for use as a prosthetic.
Best Slashdot comment on the story:
Now the Japanese must develop the next version of their robot arm so it can beat this one.via Slashdot.
The arms race begins!