11/21/2005 at 01:00 AM EST
THE BIG MAN ON CAMPUS
As our teen heroes dabble in dances and dating, Hogwarts gets its very own hunk: Hufflepuff House's Cedric Diggory. The good-guy upperclassman is "impossible to hate," says actor Robert Pattinson, 19.
HARRY'S FIRST CRUSH
He can go mano a mano with Voldemort, but Harry is no match for the charms of classmate Cho Chang. Katie Leung, 18, landed the part after "my dad saw an ad for [auditions] on the telly."
"He's the world's David Beckham
," explains Stanislav Lanevski, 20, of Bulgarian Quidditch star Viktor Krum, who arrives to vie with other top students in the Triwizard Tournament. And Hermione (above) plays his Posh Spice.
And you thought the SATs were a beast? In Goblet
, Harry must battle a fearsome dragon to test his magical abilities.
The Little Mermaid
, she ain't: Radcliffe did his own underwater stunts for a hairs raising sequence.
Irish actor Brendan Gleeson joins the faculty as the unpredictable new prof with a roving peeper (love the eyeball p.o.v. shots) that can see mischief-making behind his back.
Played by Miranda Richardson, the gossip journalist and her preposterous purple prose prove peskier than a Blast-Ended Skrewt. Says Emma Watson: "She's so deliciously evil."
NEW SCARES—AND A PG-13 RATING
The fourth Potter movie—which includes a young character's death—has a grownup rating to reflect its fear factor. Warner Bros, wants Ralph Fiennes's look as the evil Voldemort to be a surprise, but rest assured, he's terrifying. That and the movie's monsters make it inappropriate for small kids. Says director Mike Newell: "These are adult stories with a very strong moral aim."