As others have said, this is Doctor Who at its best. The first two episodes are good, though I felt they were just slightly off-the family weren't quite believable. Perhaps they needed more exposition. Having said that, they are still very good episodes-the Who is best when a bit scary.
Blink is the reason why you would buy this DVD. With the Doctor and Martha absent for most of the episode it is the one-off characters that steal, not only the show but the whole season.
The basis (statues send you back in time when you aren't watching) isn't all that great (stealing life-energy, come on), but it sets up a fantastic situation. Rarely has the doctor been able to give such a chilling warning-don't blink!
Would love to see more of these baddies, who must claim a place in the Doctor Who Baddies Top 10!
The episode kicks off well, and finishes well. Good acting throughout, a strong story and great characters make this a stand out episode. That characters who had only a couple of scenes were appealing and entertaining is a mark of the quality of this.