From Moviefone.com."School vacation has never seemed longer. 'Potter' heads who've been breathlessly waiting two years since the last movie from the mega-popular franchise can finally exhale -- Harry, Ron, Hermione and their classmates are back for year 6 of Hogwarts training in 'Harry Potter and the Half-Blood Prince' (opens July 15), which is shaping up to be the most romantic -- and of course,
