Hey I found that video too! And also after watching airmans video
anyway, I would make it go faster indeed.
I thought of a servo that would make the body go from left to right, from the hips out. (try it with your own body and you'll understand better
And it would swing right when it lifts its left leg and steps forward with it.
It wouldn't be easy to make, but nothing fun is...
Now that I'm typing this I just thought of this: This concept will make the robot quite unstable on uneven terrain...
I'm going to ponder on this for a little while longer I guess