Proof of a Conjecture of Chan, Robbins, and Yuen
  Using the celebrated Morris Constant Term Identity, we deduce a recent conjecture of Chan, Robbins, and Yuen (math.CO/9810154), that asserts that the volume of a certain $n(n-1)/2$-dimensional polytope is given by the product of the first n-1 Catalan numbers. 
Doron Zeilberger (Temple University)