As far as I know Michelle actually is the one who introduced the Charlotte spiral into a competitive programs. (Many skaters did it in shows -- starting with Charllotte Oelschlagel herself.) Sasha has a great one.
http://upload.wikimedia.org/wikipedia/commons/0/05/Sasha_Cohen_charlotte_spiral.jpg
Really??? I didn't know that. How could I not have known that?
Anyway, Sasha has the best Charlotte spiral on the planet, not suprising, given her facility for such moves, and I love it when she includes it.
But Michelle's is quite lovely. Alissa's too but somehow, I prefer Michelle's.
The Charlotte is one of the my favorite moves. I know there are some posters who absolutely hate it but I think it's an amazing show of athleticism.