There will be a special online Worldwide live screening of Harry Potter and the Half-Blood Prince on 12th December. Director David Yates will host the event, which rolls out from London at 8 pm local time. Daniel will also attend the event. Fans who register their Half-Blood Prince Blu-ray discs through BD Live will be invited to the screening, and the first 100,000 who RSVP will be guaranteed a spot to participate. Also more info here.
"I'm really looking forward to the live community screening of Harry Potter and the Half-Blood Prince and excited to talk directly to fans of the movie about my experiences and answer their questions," said Radcliffe. "It's a wonderful way for fans and for those directly involved with making a film to share opinions and ideas."
Yates added, "I'm looking forward to engaging with the thoughts and opinions of the fans who have supported us so loyally and passionately over the years-without them the films wouldn't be the success they are."