This might be of interest to many of you. MLwiN, a software package for multilevel modeling developed at Bristol that includes functions beyond those present in, e.g., lmer, now has an interface for R (kinda like WinBugs, etc.), so that you can continue to use R while taking advantage of the powerful tools in MLwiN. The package is called R2MLwiN. For more details, see below.
We are pleased to announce a new R package, R2MLwiN (Zhang et al. 2012)
that allows R users access to the functionality within MLwiN directly from
within the R package. This package has been developed as part of the e-STAT
ESRC digital social research programme grant along with the Stat-JR package.
See <http://www.bristol.ac.uk/cmm/software/r2mlwin/> for more details
including examples taken from the book MCMC Estimation in MLwiN.
Feedback gratefully received by either me or Zhengzheng Zhang (Z.Zhang@bristol.ac.uk).