So I just found the greatest freaking website to demonstrate that correlation != causation.

Check it out.

Some of my favorites:

• http://www.tylervigen.com/view_correlation?id=7
• http://www.tylervigen.com/view_correlation?id=3857 (Look at how freaking strong that correlation is, holy hell)
• http://www.tylervigen.com/view_correlation?id=1273
• http://www.tylervigen.com/view_correlation?id=36

You can also discover your own: