Brooding Hero Saves IMAX : The Dark Knight 's billion-dollar windfall last summer helped nudge IMAX closer to its old, profitable days, with the megascreen exhibitor regaining last quarter more than half of its $7.3 million loss from this time last year. The company has taken a hit from ongoing digital rollouts at more than 275 theaters globally; it anticipates another boost when Dark Knight is rereleased in January '09 and when James Cameron's Avatar arrives next December. If/when Disney ever accedes to the rumored Hannah Montana 2: Miley Day Massacre , look for the black ink to gush once again at IMAX's Toronto headquarters. [THR ]