If you get the Outdoor Channel, there's a show called Impossible Shots
that includes Bob Munden as a regular shooter. I've never seen him do any quickdraw work on the show. It may be that he's given that up (the video posted above is pretty old). Here's a video of him shooting a balloon at 200 yards with a snubbie.
If you don't get the Outdoor Channel, you can find plenty of other videos of him on YouTube.
BTW, if you watch the video from the OP, you'll notice that he doesn't actually draw before shooting the two balloons. He puts the gun in the holster. Then he takes it out and fiddles with the cylinder. Then he moves it vertical as if he's reholstering, but quickly pulls it up and shoots. It's still impressive to get two shots off that fast, but...