I just read a very well-written article on reproducible research, giving 10 simple but important rules for making your results (more) reproducible:
Sandve GK, Nekrutenko A, Taylor J, Hovig E (2013) Ten Simple Rules for Reproducible Computational Research. PLoS Comput Biol 9(10): e1003285. doi:10.1371/journal.pcbi.1003285.
Happy reading!