It almost didn't happen, but tonight (Dec. 30, 2011) Strikeforce, DREAM and K-1 kickboxing champion, Alistair Overeem, will make his highly-anticipated Ultimate Fighting Championship (UFC) debut against Brock Lesnar.

It's a monstrous 529-pound clash that will serve as the UFC 141 main event, as well as determine the number one contender to next challenge division champion, Junior dos Santos, in 2012.

In the video above, "Demolition Man" takes a tour of where it's all set to go down -- the MGM Grand Garden Arena in Las Vegas, Nevada -- and the cameras follow him throughout several media obligations, including the UFC 141 open media workout.

T-minus four hours, Maniacs. Who ya' got?

To check out or complete fight archive, featuring all the news and notes you can handle, for the bout between Brock Lesnar vs. Alistair Overeem click here. Be sure to also join us for bell-to-bell UFC 141 fight coverage right here.