Katie Couric's violent fall down stairs on live TV.

The new "Late Late Show" host James Corden had the scare of his life yesterday.  He introduces Katie Couric and on her way to the stage she violently tumbles down the stairs.  The look on James Corden's face is priceless.  This was very well done!  The video is below.

A celebrity April Fools that didn't go so well came from Sam Smith.  He came out of the straight closet on twitter.  And the internet blew up!  The hostility was surprising!