News Summary: Disney gets new studio chief

NEW HIRE: The former president of Warner Bros. Entertainment, Alan Horn, will lead Disney's movie studio as chairman.

HIS PAST: Horn oversaw the hugely successful runs of the "Harry Potter" and "The Dark Knight" movies at Warner Bros. and is one of the highest-profile executives in Hollywood. Horn had stepped down at Warner Bros. in April 2011 and had a consulting agreement through 2013.

DISNEY'S PAST: Two months ago, former chairman Rich Ross stepped down in a move widely seen as taking responsibility for "John Carter," the science-fiction movie that caused an epic $200 million write-off for Disney.