Joseph Keller (US), Raymond Goldstein (US/UK), Patrick Warren and Robin Ball (UK) have been awarded the 2012 Ig Nobel prize for physics for calculating the balance of forces that shape and move the hair in a human ponytail [1,2].
The winners were announced and awarded on Thursday 20th September.
Anyone interested should examine the Ponytail Equation.
 Raymond E. Goldstein, Patrick B. Warren, and Robin C. Ball, “Shape of a Ponytail and the Statistical Physics of Hair Fiber Bundles.” Physical Review Letters, vol. 198, no. 7, 2012.
 Joseph B. Keller, “Ponytail Motion,”, Journal of Applied Mathematics, vol. 70, no. 7, 2010, pp. 2667–72.