You would have thought it was a major Hollywood event. Ashton Kutcher and Demi Moore, newlywed Jaime Pressley and Janet Jackson were all front and center. But what brought them all to L.A.'s Staples Center was a fight: the UFC 104 showdown between Lyoto Machida and Mauricio "Shogun" Rua.

PHOTOS: Celebs Cheer On UFC Fighters

• TAGS

• Ashton Kutcher
• Demi Moore
• Lyoto Machida
• Mauricio Rua
• UFC