Doctor Who Greatest Moments: Aliens
World Premiere: Thu 4 Feb 2010 - 3:55am GMT [BBC Three] (United Kingdom)
Running Time: 15 minutes
The Doctor has met his fair share of alien enemies. From giant wasps to squat Sontarans, he has come up against the finest in the universe. David Tennant and other cast members discuss some of the most memorable monsters and talk about a selection great alien moments.
Narrated by Jo Whiley.