Over seven hours of special features including: Doctor Who confidential, deleted scenes, audio commentary, David Tenant video diaries, Doctor Who at the Proms, Doctor Who at Comic Con, and more
Although I think David Tennant's run as the Doctor was great in general, and he ranks right up there with Peter Davison (ironically, his father-in-law in real life now! Talk about a dynasty of Time Lords! :0) and Tom Baker as one of my favorite Doctors overall, I think his final episodes were absolutely his best; funny, well-written, and heartbreaking as well! I especially love the actor who play's Donna's granddad, Wilf; he's like the grandfather/father figure that the Doctor himself never had-- their final scenes together are so touching!