Love Astaire. Almost as brilliant as his dancing was his insistence that all his dancing be filmed from head to foot. Meaning that any recorded image of him dancing includes his head and his feet.
Think about how many recorded images of people dancing where you see only them from head to waist, or waist to feet. Fred, and by extension his dancing partners, were seen head to foot so their dancing talent was obvious (or not!) Plus, it adds to the viewers experience and enjoyment.
Astaire also did most of his own chorography.
A rare and peerless talent.