Answer:

drwho

Answer	Crossword Clue
DRWHO	TV time traveler
DRWHO	BBC time traveler
DRWHO	BBC cult sci-fi series

DRWHO	BBC Time Lord with two hearts
DRWHO	Long-running sci-fi series
DRWHO	Sci-fi TV show
DRWHO	BBC sci-fi classic
DRWHO	Show featuring an alien from the planet Gallifrey
DRWHO	"Torchwood" was spun off from it
DRWHO	BBC time-traveling series
DRWHO	BBC sci-fi show

DRWHO	"... and the Daleks" (1965 sci-fi film)
DRWHO	Last of the Time Lords