If you've never heard about RC digital servos or haven't been introduced yet to digital servos, these sample links that will get you fluent on the subject:
Active community developing a hardware/software hack for cheap servos to transform them into super robotics servos.
Paul Hill's web site - Probably the most approachable yet comprehensive introduction to robotics you can get for free.
Great web site in general with tones of documentation about servo and motor control.
A good one-pager about robot construction for the newbie.
A good one-pager about the theory of digital servos from Kondo's competitor Futaba.
Another short intro to servos.
Robo-One
The ultimate robot fighting contest where humanoid robots fight according to rules taken after martial arts:
New Scientist article with video clip
Article by someone who attended Robo-One in Japan
Articles
TechTV article concludes that KHR-1 is much more fun the Sony AIBO!!