Not one current presidential candidate is as inspiring as Senator John Kerry was in 2004 — at least not to Leonardo DiCaprio. The actor, who produced the global-warming documentary The 11th Hour, told reporters he's waiting to endorse a candidate who presents an environmental policy that's "clear" and "tangible." Or perhaps he's withholding the coveted DiCaprio endorsement until the the man he considers "a great genius of our time," Al Gore, enters the race.