It's that time of year again. A few dramatic weeks during March and April when the nation's attention is fixated on some well-known universities and little-known colleges battling against each other for amateur basketball glory. Well, before your fill out your office or family brackets, we've got a friendly entertainment showdown where you call the shots.

Today, HitFix launches Heroes vs. Villains March Mayhem, an epic bracket battle between good and evil (aka, the greatest villains and heroes in television and cinema history). When all is said and done fans like you will determine which hero will take on which villain for the 2014 title.

We begin with a Heroes bracket and a Villains bracket. Within those brackets are respective TV and movie pools giving the competition four divisions (Movie Heroes, Movie Villains, TV Heroes, TV Villains). The first round consists of 32 match ups and you can cast your ballots between now and Thursday, March 20. Voting in the second round will begin on Friday, March 21. You can vote once a day in each match-up.

The HitFix editorial staff debated the pros and cons of each battle and we still ended up with some tough early showdowns. How about Iron Man vs. James Bond? Harry Potter vs. Gandalf? Indiana Jones vs. Wolverine? Or the Girl on Fire vs. the Amazing Spider-Man? Who would win between Darth Vader and Jaws? The Joker and Khan? Or, have mercy, Lord Voldemort and Magneto?

On the television side we have Wonder Woman vs. Xena and even Heathcliff Huxtable vs. Sheriff Andy Taylor. Among the TV villains seeding, highlights include J.R. Ewing vs. Amanda Woodward, King Joffrey vs. Mr. Burns and the Borg vs. the Cylons, just to name a few.  And yes, even Walter White and Tony Soprano found a way to bring more drama to the tournament.

Now that you've gotten a preview, click on the vote now button below to get started. Pick wisely, because the good guys have to win eventually, right? (Right?)

To see how your favorite Heroes and Villains are faring, make sure to bookmark HitFix.com/HeroesvsVillains.