Misleading title, robots can actually be great dancers[1]. The problem with AI is that it's a moving target, as soon as there's an advance we tend to go "well that's still pretty mechanical", forgetting that we're also just mechanical systems (probably). Granted, AI and AGI isn't really the same thing, but it seems like we always make the assumption that an AGI has to work like a human internally. To me that seems like a good source of inspiration, but it's probably not a requirement. In the end, I think we'll figure out that for all our "creative genius", we're still just monkeys who see and do, and sometimes we do something new.
[1] = http://youtu.be/ww9ClmCWBr0