A few weeks ago I introduced the method I use to draw pedigrees using the dot program. Dr Zhao had recently same idea as his paper using dot and R has just been published in Bioinformatics:
Zhao JH. Pedigree-drawing with R and graphviz.
Bioinformatics. 2006 Apr 15;22(8):1013-4. Epub 2006 Feb 17.
Sometimes you find a nice piece of code and you don't even think that it could be used to write a paper :-)...