If you've been training in MMA or submission grappling for any length of time, then you've probably heard of the Monson choke. Here is a free video of Jeff Monson showing how to perform the Monson choke submission properly and then I also found a free MMA video of Jeff Monson actually pulling off the Monson choke and winning a fight in MMA.
Monson Choke free Instructional Video
Monson Choke in MMA Free Video
The Monson choke can be a tricky submission. Make sure to get hand on instruction so that you can perform this technique optimally. If you're in the Los Angeles area, stop by one of the many MMA gyms in the area.