Well, nothing is quite as cool as Luna Lovegood in her Spectrespecs, but there are a few more images from Harry Potter and the Half-Blood Prince floating around the net (these are courtesy of Ace Showbiz). You can check out Rupert Grint's head-protected Quidditch getup at the dining table with Harry and Hermione above... (Can anyone tell me why he doesn't free his head while he eats? Does he fear that he'll lose his helmet?) And the other pic at AS has got Harry having a pow-wow with Professor Slughorn (Jim Broadbent), who is sporting an affably devilish facial expression.
This time around, Harry is in his 6th year at Hogwarts, and he finds "a potion book signed by the self-titled half-blood prince." There'll be scares for sure, as well as wackiness, and what you can see above -- some good rounds of Quidditch. This will all hit the screen November 21.