The only reason I could see this being an improvement over wheels is the weight, am I wrong?

Legs would give it better traction and all-terrain mobility in theory. It's a cool bit of engineering, but I'm guessing that it can't stop or slow down without falling over, which would limit its practicality.

It might be the start of a very good idea though. I don't really know much about it, but it seems to me that the difficult part of normal legs is getting them back into position for another stride while maintaining balance and the wheel mounted legs almost do that automatically.

Hmm. Add some software to home in on a target, strap on some C4 and it's a fun game of hide and seek!

*music *engineering

Adding video to channels (Music) - requested by ant.

I admit, that was the first plausible use case I could imagine for it (aside from just being a cool thing). It could also be a good decoy. Or, if you could connect a bunch up with a mesh network, it might be useful for clearing landmine fields (that one gets you humanitarian points *and* DOD funding).

If all else fails, maybe it could herd sheep.