This right here, explains the whole scene when Harry dances with Hermione. It's actually one scene that wasn't in the book that I absolutely loved in the movie, 'cause it showed how much Harry really cares about Hermione as one of his best friends.
In Greek mythology, the seer Cassandra was cursed so that none would believe her prophecies. Professor Trelawney's great-grandmother's name was Cassandra. And other interesting facts about harry potter