Here is a circuit I have been doing that is ideal for MMA. Perform 30 seconds of each of the 10 exercises with no rest in between. Complete as many reps of each exercise as possiable. Rest for 1 minute at the end of the circuit and repeat 3-5 times. Walk over press ups over medicine ball, 2 handed kettlebell swings, alternating arm kettlebell snatch, squat jumps, explosive get ups, sprawls, rotational shoulder press, jump lunges, lateral jumps and bastards (burpee with a press up). Check out a sample round.
http://www.youtube.com/watch?v=_A5uJNUXoV4