Better dance moves involve the head and torso

ScienceNOW - These dance moves are irresistible

In this study, researchers got avatars of real dancers using motion capture technology and video cameras. This allowed them to separate dance moves from the overall attractiveness of a man. This was necessary because in previous studies, asking a heterosexual woman who was a good dancer equated to asking her who was the attractive overall. Once the dance was removed from the dancers using computer generated dummies, women were asked to rate the dancing abilities of the avatars. Women preferred dances with varied moves, and movement of the head and torso, rather than just the feet and arms. There are numerous theories about why, but this is just a single-culture study so grand socio-biology might not be applicable.