If you're clever, R is wonderful for this and free. There's a fairly large working group in the stat department here at Iowa State dedicated to statistical graphics, and they exclusively use R. An alum designed the ggplot2 package.
Is there a good existing tutorial for R? If not, do you have the time and background to write one?
Are there any areas of study that you feel are underrepresented here, and would be interesting and useful to lesswrongers?
I feel some topics are getting old (Omega, drama about moderation policy, a newcomer telling us our lack of admiration for his ideas is proof of groupthink, Friendly AI, Cryonics, Epistemic vs. Instrumental Rationality, lamenting how we're a bunch of self-centered nerds, etc. ...), and with a bit of luck, we might have some lurkers that are knowledgeable about interesting areas, and didn't think they could contribute.
Please stick to one topic per comment, so that highly-upvoted topics stand out more clearly.