Harriet the Hexapod
Just a bit of a storage space on Hexapod back reading:
Artisan's Asylum - Stompy on Kickstarter: http://www.kickstarter.com/projects/projecthexapod/stompy-the-giant-rideable-walking-robot-0
Adafruit's 16 channel 12 bit PWM/Servo driver: http://www.adafruit.com/products/815
Strandbeest -- because strandbeest is necessarily awesome anytime you start thinking about walkers: http://www.adafruit.com/products/815
Raf says consider: Hitec feedback servos, robot hitec servos listed at tower hobbies
Look at OpenServo: http://openservo.com/
Progression through a couple simple versions: http://catch22.eu/robotproject/design/