Harry Potter stars Tom Felton, James and Oliver Phelps and Matthew Lewis say that fans are in for a real treat with Half-Blood Prince after viewing it this past week.
According to Tom Felton:
There's lots to look forward to. I was laughing through the whole two hours.
While Matt Lewis states:
Every year, we always say 'it's much darker, this one', but this one really is. It gets pretty heavy in parts.
But the balance they've achieved with the comedy... the timing is wonderful.
Jim Broadbent [Professor Slughorn] is superb, Rupert Grint [Ron Weasley] is on top form and it is very very funny.
Finally, James and Oliver Phelps add:
It was really cool because we got to work in probably the best set there.
The set Fred and George have is so insane we weren't disappointed to be away from Hogwarts at the time.
But when we saw the film I realised how much I missed the shoots in the Great Hall and on the quidditch pitch.