At a business summit on energy, Politickerma.com reports, a prominent supporter of Sen. Barack Obama, D-Mass., made a crack about Sen. John McCain's age. "These are the exciting last two week moments of the presidential campaign," said Sen. John Kerry, D-Mass., today in Cambridge, Mass. "So it's a very special time. I can't wait for it to be over. I am so tired of the press' silly questions that they ask along the way. And cable television which reduces everything to stupidity - the lowest common denominator of conflict." "I don't know if any of you know what it's like....