Dustin Hoffman

While taking a leisurely stroll through London's Hyde Park, Dustin Hoffman spotted a man "staggering and frothing at the mouth" before he collapsed. Dustin called for help and stayed with the man until paramedics arrived. Once medical help got to the scene they revealed that Dustin had saved the man's life, as he was in cardiac arrest when they got to the scene. A minute later and it could've been worse.