Just throwing it out there...
"There was a time in this country when people believed in science. We cured polio. We sent men to the moon. We were proud of science. All of us. But the Republican party today continues to denigrate science at every opportunity. Governor, when it comes to climate change, I stand with the people wearing space suits, you stand with the people wearing tinfoil hats."
"Iraq is one area where I agree with your close friend Ron Paul. And I'm glad there are some folks in your party who are making sense on this issue. Your predecessor John McCain said that if the democratic elected government of Iraq asked us to leave, we should leave. I agreed with him, and I honored that request when it came. If your position is to ignore the expressed wishes of the democratic government we helped create, then you are surrendering to the forces that oppose them."
"Shortly after I took the oath of office, I went to our foreign allies to introduce myself to the world stage and lay out our agenda. It was a strong effort, a noble effort, a diplomatic effort. But out on the campaign trail, you continue to speak derisively and dishonestly about these efforts. You call it an 'apology tour.' For saying this, the Washington Post gave you four Pinocchios. Factcheck.org said it was totally baseless. PolitiFact rated it Pants on Fire. And yet, you continue to say it. I understand we may have disagreements on policy, I understand you have a different vision. But when it comes to world affairs, the stakes are too high, the consequence too grave, so I'm standing here tonight to ask you, please, stick to the truth, and show some respect for the office you wish to hold."
"Governor Romney, you recently said that Russia is our number one political foe, and that you plan to return to the foreign policy of thirty years ago -- to the policy of Reagan. Maybe you also want Sean Connery to play James Bond again, I don't know. But it's time to alert your campaign staff, the cold war is over. It's time to move forward."
"When it comes to China, I know you have a unique perspective, having invested heavily in companies over there. In our last debate you said you'd base a lot of domestic policy on whether or not to borrow from China. For example, every year 45,000 americans die because they don't have access to health insurance. By the way, that's like having a 9/11 attack every day for six weeks. But you suggested that wasn't a priority, that that problem should have been set aside for another year. Well Governor, when it comes to dealing with China, my priority is with the american people. Your priority is with the Chinese economy."
"Governor Romney, at the very moment Libyan rebels were attacking us with bricks and bottles, you were attacking us with Twitter. I understand you're eager to criticize my administration, but if you want to be president, you have to know when to put down your iPhone."