Rejoinder: Gibbs Sampling, Exponential Families and Orthogonal   Polynomials
  We are thankful to the discussants for their hard, interesting work. The main purpose of our paper was to give reasonably sharp rates of convergence for some simple examples of the Gibbs sampler. We chose examples from expository accounts where direct use of available techniques gave practically useless answers. Careful treatment of these simple examples grew into bivariate modeling and Lancaster families. Since bounding rates of convergence is our primary focus, let us begin there. [arXiv:0808.3852] 
Persi Diaconis, Kshitij Khare, Laurent Saloff-Coste