President Obama was in Iowa this afternoon where it all began, so to speak to give his first speech since he signed health-care reform legislation into law on Tuesday. You could tell the guy was brimming with new confidence: Not only did he make fun of the fearmongers who warn health-care reform will cause the world to end ("Leaders of the Republican party, they called the passage of this bill ... ARMAGEDDON!"), he also dared the Republicans to run this November on a platform of repeal. "My attitude is go for it!" He even took on a heckler who shouted something about, we think, the public option not being included in the bill. Bring it on, everyone! Watch all the best parts in less than two minutes.