io9 March Movie Madness: Pick more of the worst science fiction movies ever made!

Vote now on the rest of science fiction's worst movies for our March Movie Madness first round. Today's craptacular selection includes Attack of the Clones Star Trek: Nemesis, The Last Airbender, Green Lantern... and sentimental favorite Manos: The Hands of Fate!

This year, you are tasked with crowning the world's worst science fiction movie ever made. We carefully selected and seeded the most despised films from around the genre world. One by one, they will each fight to the death, according to your votes, until we have our victor. 64 films enter — only one will leave. Vote now to decide which film is truly the worst.

io9 March Movie Madness: Pick more of the worst science fiction movies ever made!

Need a closer look? Click on the image right here to embiggen the whole bracket and see the thunderdome madness in all its glory! (Or try right-clicking and selecting "open link in new tab.")

You can find all the polls down below. As far as criteria for voting goes, we leave it in your hands. Vote by how you feel. What makes a bigger flop: shattered expectations, or just general crappiness? It's up to you to decide. Today marks the first round. The polls will be open from 12 PM PST today to 11 PM PST tomorrow. Here's the official schedule:

First Round Part 2: Friday, March 16h
Second Round: Monday, March 19
Second Round Part 2: Wednesday, March 21st
The Sweet Sixteen: Friday, March 23
Elite Eight: Tuesday, March 27th
Final Four: Thursday, March 29h
Championship: Monday, April 2nd

VOTE RIGHT NOW For the movie you think deserves the title of Worst Scifi Movie Ever Made. This round of polling ends tomorrow night at 11 PM.

So far, the biggest winners of the first round - if you can really call them "winners", of course - were one-seed Battlefield Earth and the high-concept Eddie Murphy crapfest Meet Dave, which respectively crushed Alien Resurrection and The Lost World by 89% and 82%. The closet match-up was the American Godzilla vs. the sentient fighter plane movie Stealth, with the former squeaking by with less than 50.1% of the vote.

We also had a few upsets, with both of the 13-seeds knocking off the favored 4-seeds. (This assumes our seeding was completely correct and scientifically rigorous to begin with, which of course it was.) The franchise-killing Superman IV took down Frank Miller's grimy take on The Spirit, while lovable underdog Santa Claus Conquers the Martians used its seemingly endless supplies of irrelevant stock footage to take down the misbegotten Ray Bradbury adaptation A Sound of Thunder.

But that's all in the past now - it's time to pick the worst of the worst from the other half of the bracket. Can the stupidity of the second Aliens vs. Predator movie stand a chance against the whitewashed, tone-deaf abomination that is M. Night Shyamalan's Last Airbender? Which is worse, the second Star Wars prequel or the second Mortal Kombat movie? Which is more embarrassing, Shia LeBeouf trying to be a 50s rebel in Kingdom of the Crystal Skull... or Halle Berry's Catwoman outfit?

The time to vote is now!