Lavie Tidhar's 'Osama' was voted the year's best fantasy novel this weekend at the World Fantasy Convention in Toronto. It won over stiff, worth competition that include Jo Walton's "Among Others," which had already won this year's Hugo and Nebula Awards; George R.R. Martin's "A Dance With Dragons," the latest installment in his "A Song of Fire and Ice" series; and Stephen King's "11/22/63," a popular and bestselling Kennedy assassination time-travel tale.