The third and final 2012 Presidential debate took place on Monday, Oct. 22 in Boca Raton, Florida. President Obama squared off against challenger Gov. Mitt Romney that focused on foreign policy. The responses from celebrities on Twitter ranged from the serious to funny. "American Idol" host Ryan Seacrest, NBC's Ann Curry, "The Voice" judge Adam Levine, E! host Giuliana Rancic and even fallen NFL star Chad Ochocinco weighed in. Check out what Hollywood stars tweeted to their many followers.