There was a MMA show that happened last weekend in Billings, Montana called "Backflips & Beatdowns 2." The MMA event was filled with MMA fights along with motocross.
The MMA fighters fought inside a cage while the motocross folks were doing backflips over the cage. See it for yourself. Click on the link below as well to see interviews from the fighters and more highlights from the show.
Here is another video of the show along with interviews from the fighters on that show.