Here's the web site of one of my favorite skeptics, James Randi. He's been waging a non-stop battle against ignorance and rip off artists for quite some time now. Here's my favorite quote from his web site:

Herewith the 3000-year history of alternative medicine in 30 seconds:

1000 BCE: "Eat this root."

100 CE: "That root's heathen, don't eat it. Say this prayer."

1800 CE: "That prayer is superstition, don't say it. Drink this snake-oil."

1900 CE: "That snake-oil is phony, don't drink it. Take this pill."

2002 CE: "That pill is artificial, don't take it. Eat this root.