This is a fun trick to teach, great for body awareness. You can teach it using shaping, or targeting (maybe other ways too)!
It's impressive to most people, but you know what impresses me the most? The little dog, just hanging out in her carrier!! It's total chaos in my house when I work with just one dog, I pretty much have to go into a separate room or outside to get any real training done. I can work on things they already know as a group, but my dogs are a bunch of pushy hooligans when the clicker comes out. Me first, me first! diving on top of each other, no manners at all!