not only be the episode amazing , but the commentary and extra footage be completely worth the money spend on this dvd set . David Tennant 's Video Diary be funny and insightful into the making of the series , as well as he personal journey as the 10th doctor . I be impress at the length of the diary , and the quality of the Doctor who Confidential piece . Great set !! can not wait until season 3 in April : -rrb-