The Dow (^DJI) closed at its highest level since December 10 2007 a date previously best known for Led Zeppelin reuniting to the strains of Stairway to Heaven. Highway to Hell has been more like it for Apple Inc. (AAPL) of late — even after belatedly agreeing an iTunes deal with AC/DC — and all will be revealed when the tech titan announces earnings after today’s closing bell.   John Boehner actually managed to get through a news conference without blubbering but No More Tears didn’t do Johnson & Johnson (JNJ) any good as it slipped 0.74% after reporting results. The House Speaker’s political rival BlackBerry addicted President Obama was just sworn in on a ...