Ultimate Fighting Championship (UFC) held its weigh-in extravaganza this afternoon (Dec. 7, 2012) at the KeyArena in Seattle, Washington, for tomorrow's UFC on Fox 5: "Henderson vs. Diaz" mixed martial arts (MMA) event.

For complete UFC on Fox 5 weigh in results, as well as a video replay of the scale-tipping action, click here.

UFC on FOX 5 will be headlined by a lightweight title fight between reigning 155-pound champion Ben Henderson against number one division contender Nate Diaz. In addition, Alexander Gustafsson will try to move to the head of the light heavyweight class when he tangles with former 205-pound champion Mauricio Rua, while B.J. Penn vs. Rory MacDonald will meet in a welterweight scrap that pits the old school opposite new.

You ready?

Remember, too, that MMAmania.com will provide LIVE blow-by-blow, round-by-round coverage of UFC on FOX 5: "Henderson vs. Diaz," beginning with the "Prelims" bouts on Facebook scheduled for around 3:45 p.m. ET. In addition, we will also provide LIVE, real-time results of the main card action as it happens throughout the evening this upcoming Saturday, starting promptly at 8 p.m. ET.

For more on this weekend's event be sure to check out our complete "Henderson vs. Diaz" archive right here. Also, check out what happened when the rest of the main card squared off below.

Rory MacDonald vs. B.J. Penn:

Mauricio Rua vs. Alexander Gustafsson:

Mike Swick vs. Matt Brown:

Let's do this thing already, huh?