Hell I can give you currently held beliefs that I can prove wrong:
Global Warming:
http://video.google.com/videoplay?docid=-5576670191369613647
Big Bang:
http://whatreallyhappened.com/WRHARTICLES/bang.php
Floride is good for you:
http://www.fluoridealert.org/health/accidents/acute.html
Mercury is good for you:
http://www.informaworld.com/smpp/content~content=a910652305~...
Keynesian Economics :
..Just look at the dollar index.