I love this move as a "finisher". It's a great combination of balance (stabilizers) and focus (gotta squeeeeze), and you can really feel it just where you want to.
Start with your feet together, and a light barbell resting on your shoulders.
Fig. 1: Take a big step to your left, putting most of your weight on your left leg, and straightening your right. Sit back so that your knee is behind your toe and the weight is in your heel.
Fig. 2: Push off your left heel and come back up to standing, feet together.
Fig. 3: Keeping your chest up and your weight in your heels, sit back as low as you can. Push your hips forward on the way up, squeezing the glutes. Repeat the lunge/squat on the other side. Do 3 sets of 10 - 12 reps on each side, with 1 minute rest between each.
...and yes, my fallback career is as a stick-figure artist.