1. Warm up

2. Skill training: back squat

3. Complete as many rounds as possible in 20 minutes of:
Chest to bar pull-ups, 5 reps
20/14 lb medball, Wall ball, 10 reps
24/16 kg kettlebell swings, 15 reps

4. Recovery: mobility

This workout was posted on the CrossFit mainsite on Tue 9 May 2011. Have a look at the comments and scores here.