\author[Douglas Bates] {Douglas~Bates} \institute[U.Wisc]{University of Wisconsin - Madison\\ \bigskip {\color{Scode}\texttt{}}\\ \bigskip Slides for this presentation are available at\\ \url{lme4.R-forge.R-project.org/slides/}} \date[August 6, 2009]{Joint Statistical Meetings\\Washington, DC\\August 6, 2009}