LAUGH TILL IT HURTS    I heard a doctor recently interviewed about heart disease say that your heart will be much healthier if every single day, you laugh uncontrollably.  So, friends, I'm helping you out.  This video which my husband discovered on youtube, may singlehandedly save your heart.  It nearly sent me into early labor.  My co-anchor, Todd Wallace, was unable to speak for about 5 minutes after viewing this masterpiece.  A word of warning - do not stop after the first 30 seconds. It only gets more stunning as it goes on.    So here it is - the "neutron bomb of