Ben Goldacre is another good scientific crusader. It's worth reading his book Bad Science for his rants against the ridiculous poop-inspecting TV nutritionist "Dr" Gillian McKeith, and the more serious issue of quack medicine and its propaganda war against HIV/AIDS medication in South Africa.

Here's a taster, from his Guardian column: http://www.guardian.co.uk/science/2007/feb/03/badscience.ukn...