Seen it. Just got home.
OMFG.
Amazing.
I haven't read the book for a good two years so I'm not nitpicking anything they left out... and even though Snape didn't scream, "Don't call me a coward", I'd rather them have left it out them have him scream the grammatically incorrect (imho) "Don't call me coward" that was in the book.
Enough said. Snape was f**king amazing. Draco was amazing. I cried.
I'm seeing it again in... 11 hours.