Canon EOS 5D Mark II, f/5.6 @ 15 mm, 1/160, ISO 200
This is a shot taken by my good friend Bob Latham. Please see his website here: http://www.boblatham-photography.net/
This was taken with the new 1DX and the fabulous Canon 200mm f/2 (I'm going a shade of green now!).
This shot shows the amazing low-light capabilities of the 1DX - ISO is 12800!
Composition - wise I love the diagonal line created through the frame by the performer's arms.
Thanks for letting me post the shot, Bob!