BJJ Move #37: Major Outside Reap (O soto gari)

Here's a nice takedown.

WARNING! These techniques could result in serious injury or death if practiced incorrectly or even if performed correctly. They should only be practiced with the supervision of an experienced instructor.

Major Outside Reap (O soto gari): (gi)

From a standard grip, or a collar-and-elbow grip with your left hand on your opponent’s right elbow/sleeve and your right hand on the back of his neck / collar.
With your left hand, pull strongly to your left, and with your right hand, pull your opponent's body in against your own (your right elbow bends deeply) as you take a deep step forward onto your left foot, so your right foot is just outside your opponent’s right foot. It is important to establish contact between your torsos.
Pivot your opponent’s shoulders clockwise and swing your right leg, straight at the knee, out in front of your for forward momentum. Turning him this way shifts his weight onto his right heel. Don’t bend forward at the waist— you need to use that momentum to finish the throw.
Now sweep out his right leg with your own, pushing forward with your right hand and bending forward with your body, pulling down and forward with your left hand. Don’t kick his leg: point the toes on your right foot and sweep your calf and ankle across the back of his leg. Bend forward at the waist like a pendulum, keeping it parallel with your sweeping leg.