Greenweaver- I just wanted to add that other effective medicine ball exercises include the lunge and the medicine ball ab workouts.
The lunge exercise requires a traditional forward lunge stance while moving your arms to alternating sides as you come up. This exercise not only works the legs and gluteal muscles but it also shapes your waist and tones your arms.
The medicine ball ab exercises require the medicine ball to be placed on the abdominal area. Then with your knees bent you lift your back off the ground just like a traditional sit up.
This adds resistance to your abdominal muscles and starts to develop more muscle tone in that region of the body. You can start with ten sets of fifteen reps and increase as you become more comfortable.