Thanks for the responses. It does seem to be more along the lines of what your DS Lori. He doesn't really seem aware of it, but it seems like he just suddenly gets a burst of energy. The other night he was jumping while doing it. It looked like he was about to take off, LOL. Again, we had him evaluated by a developmental pediatrician at 3yo and we really don't think anything on the Autism spectrum does fit him, but it does look a little odd and I worry that others will start teasing him about it. I just find it odd that it just started suddenly. At home sometimes he does still spin around, sometimes with his arms out (think "the hills are alive" and the sound of music, LOL). He usually doesn't do that in public though. He doesn't do things like that when he is engaged in some activity or something. That is interested how your DS Lori picked up on being more socially acceptable with the movements. And I like the whole front stage/ back stage thing. So true. I think at 5 they are still figuring all that out.