Dumb Things Americans Believe | Newsweek

"Chances are that by now you've heard that nearly one fifth of Americans (mistakenly) believe that President Obama is a Muslim. In fact, a remarkably high number of Americans believe the most unusual things. Although the portion of poll respondents who believe Obama is a Muslim has risen recently, so..."

"We're heard some, but a few new (or forgotten) ones including, 'barely half of Americans were correctly able to state that Judaism was older than both Christianity and Islam.' I suspect the half that didn't know that might have been mostly Christians."