The video for the Treat & Train dog training system makes me a little sad. It asks a few questions about your dog's behavior:
Does your dog misbehave at the door? When guests come by, is there excessive barking or jumping? Does your dog dash away at first opportunity? Does your dog beg for food?

I thought about it and with one of my dogs it's "yes, yes, yes, and yes". So I clearly need one of these badly. The Treat & Train is a "remote-controlled, positive reinforcement, sound-cued, kibble dispensing system". The video says that any age dog can be trained easily with this system, not just puppies. Very good. The system starts with five simple games: tone (this has to do with the sound the machine makes but doesn't look much like a game), touch a target with your nose, lie down and stay, lie down, lie down with distractions (toys, doorbell).

There is no demonstration of the gradual training process, suddenly all the misbehaving dogs are as docile as anesthetized lab animals. As far as I can see, all the machine does is dispense a bit of kibble while making a sound well within the reach of human ears. But look at how the dogs react:

They are mesmerized! I think this thing works. I know these are probably professional dog actors, maybe even the Hilary Swanks of the canine world, but look at those expressions, that can't be easily faked. That machine is hypnotizing them. As long as they're not being harmed, is it necessarily a bad thing?

You can find out for $170. From Sharper Image.