There's actually a thread about this already, but it didn't have the links to the rest of the videos
Francois: If you look at the official site, which is linked in that other thread, I believe it says that the robot CAN sense if it's off balance, and I think I read it can climb slopes and stairs (obviously small ones

)
This reminds me of Honda's Asimo robot, though I haven't found a video of it dancing so well

It can walk more realistically than QRIO though, and climb regular size stairs, since it looks like it's around 4 feet tall.
Brian