Thanks for the comments, yeah, I have to say that I agree with AGP too - the truth is, it's not really finished yet - I probably shouldn't have posted it yet, but I'm impatient. The idea isx that from the basic little cube shape, it can unfold again to a variety of different shapes - tank, gun turret, etc. When it's done I'll post it and take this version down.
One thing that's really bugging me is that this is a two-footed structure, with the weight originally balanced over center because of the two feet. Well, one foot swings forward but there's really no visible shift in weight, which makes me think that this thing should topple backwards dirctly away from the viewer... ^^; The feet also don't really work when they retract into the body - the legs obviously extend from the edges of the cube not the corners, and past the base of the cube, yet at the end of the animation you have them sticking out of the corners... reality objects! X3 The feet need to slide in at some point to retract under neath the body of the cube. Right now it's just playing tricks with perspective.