io9's March TV Madness: Star Trek vs. The X-Files! Plus the Whedon Invitational Tournament!

The Final Four is now set, in our quest to find the greatest science fiction and fantasy TV show of them all. And today, you'll be voting on the first of two titanic semifinal match-ups. The X-Files vs. the original Star Trek: who ya got!? Also, Firefly, Buffy the Vampire Slayer, and the rest finally put in an… »3/25/13 3:02pm3/25/13 3:02pm