This first shot was tricky. Both subjects were moving fast, wearing black T-shirts in a darkened room, making it difficult to isolate them. I love the slight blur their speed creates but I didn't like the dull color of the shot so I chose to go B&W. I used Picasa's filtered black and white tool to find a color filter that helped darken the background while keeping them defined. It didn't work as well as I had hoped, but it helped a little.
This is the sort of shot I was hoping for: bodies flying through the air. I didn't get too many of them, but this one was a nice reward for watching the whole demo through my viewfinder.
I think this last shot is interesting because of the figure eight made by the legs and arms of the grapplers. I left it in color because I was able to crop out most of the distracting clutter and colors leaving just the blue and white of the uniforms.
See the rest of the shots at ChamppsDemo