R is one of the software packages with the shortest name, but with the largest array of capabilities. It is a language and environment for statistical computing and graphics, and provides a wide variety of statistical (linear and nonlinear modelling, classical statistical tests, time-series analysis, classification, clustering, ...) and graphical techniques. One of R's strengths is the ease with which well-designed publication-quality plots can be produced, including mathematical symbols and formulae where needed. In this talk, Sebastien will give a short introduction to R, and will show us how his own research has benefited from it.