Another warmup option...

The Burgener Warm-Up - Video
Because of the limited amount of time we spend in the gym (a reason many of you like CrossFit) I think the Burgener Warm-Up can help with our barbell work. This warm-up along with daily practice with just the bar or up to 50-65 lbs will go a long way towards your barbell prowess. You need to learn the press, push press, push jerk, front squat, over-head squat, back squat, power clean, clean and jerk, snatch and what ever else is done with a barbell.