A dancer's spin, especially when he's balanced on one foot, is a pirouette. A pirouette is a ballet term meaning to whirl or spin while balanced on the toes. In the case of a ballerina, she would pirouette while "en pointe," poised on the very toe of her shoe.
What's your best pirouettes video?
Pirouette Combination on Pointe - Chisako Oga