We're just a few short days away from March Madness! Brackets have been live Sunday evening, when the NCAA Selection Committee revealed the 68 teams chosen to play in The Big Dance, a.k.a. the 2012 NCAA Men's Basketball Tournament, with Kentucky, Syracuse, North Carolina and Michigan State claiming the four No. 1 seeds in this year's (highly printable) bracket. From the top dogs to the underdogs, we're all excited for this tournament to get underway, but there's only so much time to fill out your brackets before they close!

There are plenty of tough picks to make in this year's NCAA Men's Tournament, but there's only so much time to make them. All brackets will automatically close on Thursday, March 15 at 12 p.m. ET.

If you don't have a bracket yet, there are plenty of sites that offer their own printable brackets. We've assembled a group of them here, so please, take your pick of PRINTABLE BRACKETS from ESPNThe Huffington PostCBS Sports,the NCAASB Nation, and The Bleacher Report. Any one will do! Just fill in your selections before Thursday, March 15, and watch how it all plays out!

The first four games of the 2012 NCAA Tournament begin on Tuesday, March 13 in Dayton and end on March 14. In those games, BYU will face Iona in the West, Mississippi Valley State will take on Western Kentucky in the South region, and in the Midwest, the Cal Bears will take on South Florida and Lamar will also square off against Vermont.

March Madness continues in the second round, which is when the fun really begins. That insanity begins on March 15 and ends on the 16. Teams will then play the third round of the NCAA Tournament that same weekend, lasting from March 17 to the 18, which will decide who will play in the 2012 Sweet 16.

The Sweet 16 games begin on March 22, and those winners those games will advance to the Elite 8, which will be played on March 24 and 25.

Fans will get a week of rest before heading into the 2012 NCAA Final Four, which will be played at the Mercedes-Benz Superdome in New Orleans on March 31. March Madness culminates in the NCAA Men's Championship game, which will be played on April 2.

Here is the complete list of teams and regions in the 2012 NCAA Men's Basketball Tournament:

MIDWEST

1. North Carolina 2. Kansas 3. Georgetown 4. Michigan  5. Temple 6. San Diego State 7. St. Mary's 8. Creighton  9. Alabama  10. Purdue 11. NC State 12.* California/South Florida 13. Ohio 14. Belmont 15. Detroit 16.* Lamar/Vermont

WEST

1. Michigan State  2. Missouri 3. Marquette 4. Louisville  5. New Mexico  6. Murray State 7. Florida 8. Memphis  9. Saint Louis  10. Virginia 11. Colorado State 12. Long Beach State  13. Davidson 14. BYU/Iona 15. Norfolk State  16. LIU-Brooklyn

EAST

1. Syracuse 2. Ohio State 3. Florida State 4. Wisconsin 5. Vanderbilt  6. Cincinnati 7. Gonzaga  8. Kansas State  9. Southern Mississippi  10. West Virginia  11. Texas 12. Harvard  13. Montana 14. St. Bonaventure  15. Loyola (MD) 16. UNC-Asheville

SOUTH

1. Kentucky 2. Duke 3. Baylor 4. Indiana 5. Wichita State 6. UNLV 7. Notre Dame 8. Iowa State 9. UConn 10. Xavier 11. Colorado 12. VCU 13. New Mexico State  14. South Dakota State 15. Lehigh 16. Mississippi Valley State / Western Kentucky

What does your bracket look like? Who do you think has the best shot to win the 2012 NCAA Men's Basketball Tournament? Let us know in the comments section below!