Excellent book. Thank you for publishing it.

An alternative to above is the beanplot which I have found useful for comparing posteriors from Bayesian analyses. They are similar to the raindrop plots described by Barrowman and Myers (2001) but is contained in a nice R-package. I prefer them to violin or box plots since bimodality can be hidden with those approaches.

http://cran.r-project.org/web/packages/beanplot/index.html

I hope you find this useful to the debate.
Cheers,
Trevor

Barrowman, N.J. and R.A. Myers. A new graphical display for meta-analysis: the Raindrop Plot. Am. Stat.