Exercise Girl at the East Bank Club

Ok.  Someone else out there HAS to know who I'm talking about.  It's the woman who, at some time between 9-11 am goes out on the roof of the East Bank Club and really, really breaks it down, 80s dance move style.  On one hand, she seems to have no shame.  On another note - it seems as though she thinks no one can see her.  I wonder what, really, is going through her mind.  Does she think no one can see her?  She's on the roof of a three story building, surrounded by about 12 high-rise buildings.  She is highly, HIGHLY visible, IF she thinks about it.  Well, regardless of all - I enjoy her.  She entertains me.  She makes me wish I could dance, scratch that, LIVE, with such abandon.

Does anyone else know of 'exercise girl'?  My coworkers and I coined the nickname.  I imagine we cannot be the only ones....  She's like a Chicago landmark (well, a moving one).  Anyone out there?  Please don't hold back.