Earlier quoted context omitted.
I think the ice part is better--I doubt any animal would have recovered from that without falling on its side. What I really want to see is a bloopers reel from early in the project.
It seems that it is much easier to stay up with three or four legs than two. Just lock them into a slightly outward direction and you cannot fall. If you're on one or two though, you've really got to balance the rest of the system much more carefully.
Your comment got me thinking. From a technical point of view of traversing over unknown and uneven terrain, there really is no reason to go with bipedal, especially if it's easier to do control systems for tri or quadraped robots. Of the handful that can be bipedal (primates, bears, birds), it's not their preferred mode of movement. However, it's probably a psychological disadvantage for the robots to be 3 or 4 legged and work along side humans in a job that requires it to be treated as a human, like a waiter, house companion, etc. That alone is reason enough to continue bipedal robotic research.