Combine ghosts, ghouls, outlandish costumes and candy-induced stomachaches, and you have one of the best holidays ever conceived. If you're on the fence about Halloween's greatness, just take a look at these photos for that push over to the haunted side.
People gather to celebrate Halloween at the North Portico of the White House in Washington on October 31, 2010. US President Barack Obama and First Lady Michelle Obama greeted trick or treaters at the North Portico of the White House as they celebrate Halloween. UPI/Olivier Douliery/Pool