Best Sci-Fi TV Series of the 2000s
393 Sci-Fi series that started in the 2000s, ranked by popularity
Firefly
303K 14 2002–2003
Found family · Witty banter
Fringe
272K 100 2008–2013
Deep worldbuilding · Mystery box
Doctor Who
263K 175 2005–2022
Time travel · Wonder & awe
Flashforward
63K 23 2009–2010
Mystery box · Cliffhanger-driven
V
61K 23 2009–2011
Space & sci-fi · Serialized
Stargate Universe
56K 40 2009–2011
Space & sci-fi · Survival
Dollhouse
54K 27 2009–2010
Near-future tech · Morally gray
The 4400
49K 45 2004–2007
Mystery box · Ensemble cast
Dr. Horrible's Sing-Along Blog
45K 3 2008–2008
Tight limited run · Lo-fi charm
Better Off Ted
29K 26 2009–2010
Workplace · Satirical · Cynical
Caprica
28K 18 2009–2010
Faith & religion · Philosophical
Dune
25K 3 2000–2000
Space & sci-fi
Taken
22K 10 2002–2002
Sprawling saga · Space & sci-fi
Children of Dune
16K 3 2003–2003
Deep worldbuilding
Tin Man
15K 3 2007–2007
Tight limited run · High fantasy
The Andromeda Strain
15K 4 2008–2008
Event miniseries · Tense
Harvey Birdman, Attorney at Law
13K 39 2000–2007
Parody · Adult animation
Battlestar Galactica: The Resistance
11K 10 2006–2006
War & military · Survival
The Oblongs
10K 13 2001–2002
Adult animation · Class divide
Defying Gravity
10K 13 2009–2009
Space & sci-fi · Serialized
Journeyman
10K 13 2007–2007
Time travel · Mystery box
Clone High
10K 13 2002–2003
Satirical · Absurdist
Survivors
9K 12 2008–2010
Post-apocalyptic · Survival
Kings
9K 13 2009–2009
Royalty & aristocracy