The authorised Facebook tender for filmmaker Bros. BluRay DVDs, filmmaker Blu, has posted threesome clips from the upcoming Harry Potter and the Half-Blood Prince DVD special features.  These short clips are of Harry, Professor Slughorn, and Hagrid at Aragog's funeral; Professor Slughorn's prototypal Potions Class; and Ron's debut on the Quidditch Pitch.The Harry Potter and the Half-Blood Prince DVD is set for a Dec 8th promulgation on tralatitious DVD, BluRay, and digital download mediums.