While we wait for the Doctor Who specials to air on US television screens, the nice people at the BBC sent us this clip of David Tennant's guest appearance on Top Gear in a segment known as "Star in a Reasonably Priced Car". If you don't know this British show, Top Gear is to cars as SportsCenter is to sport -- wry, cleverly written, and fanatic in the best sense of the word. (A DVD of the show's 10th season was released this week, from whence this segment comes) It turns out that although David Tennant may be a master of time and space when he plays the Doctor, third gear is another matter...